Home / 13,349.13-18,420.89-7,380.75

Finding the Fourth Proportional to 13,349.13, 18,420.89 and 7,380.75

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Solution

The fourth proportional to 13,349.13, 18,420.89 and 7,380.75 is: 10,184.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.13 : 18,420.89 = 7,380.75 : x
  2. Step 2: Convert to fraction form
    13,349.13/18,420.89 = 7,380.75/x
  3. Step 3: Cross multiply
    13,349.13x = 18,420.89 × 7,380.75
  4. Step 4: Simplify right side
    13,349.13x = 135,959,946.96
  5. Step 5: Solve for x
    x = 135,959,946.96/13,349.13
  6. Step 6: Final answer
    x = 10,184.93

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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.