Home / 13,411,533,362.20-18,507,082,120.93-7,389,701,778.31

Finding the Fourth Proportional to 13,411,533,362.20, 18,507,082,120.93 and 7,389,701,778.31

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Solution

The fourth proportional to 13,411,533,362.20, 18,507,082,120.93 and 7,389,701,778.31 is: 10,197,328,968.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411,533,362.20 : 18,507,082,120.93 = 7,389,701,778.31 : x
  2. Step 2: Convert to fraction form
    13,411,533,362.20/18,507,082,120.93 = 7,389,701,778.31/x
  3. Step 3: Cross multiply
    13,411,533,362.20x = 18,507,082,120.93 × 7,389,701,778.31
  4. Step 4: Simplify right side
    13,411,533,362.20x = 136,761,817,660,411,904,000
  5. Step 5: Solve for x
    x = 136,761,817,660,411,904,000/13,411,533,362.20
  6. Step 6: Final answer
    x = 10,197,328,968.06

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.