Home / 13,615,855.16-18,789,333.09-7,420,768.96

Finding the Fourth Proportional to 13,615,855.16, 18,789,333.09 and 7,420,768.96

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Solution

The fourth proportional to 13,615,855.16, 18,789,333.09 and 7,420,768.96 is: 10,240,363.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615,855.16 : 18,789,333.09 = 7,420,768.96 : x
  2. Step 2: Convert to fraction form
    13,615,855.16/18,789,333.09 = 7,420,768.96/x
  3. Step 3: Cross multiply
    13,615,855.16x = 18,789,333.09 × 7,420,768.96
  4. Step 4: Simplify right side
    13,615,855.16x = 139,431,299,773,372.89
  5. Step 5: Solve for x
    x = 139,431,299,773,372.89/13,615,855.16
  6. Step 6: Final answer
    x = 10,240,363.03

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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.