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Finding the Fourth Proportional to 13,331.79, 18,397.13 and 7,363.31

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Solution

The fourth proportional to 13,331.79, 18,397.13 and 7,363.31 is: 10,160.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.79 : 18,397.13 = 7,363.31 : x
  2. Step 2: Convert to fraction form
    13,331.79/18,397.13 = 7,363.31/x
  3. Step 3: Cross multiply
    13,331.79x = 18,397.13 × 7,363.31
  4. Step 4: Simplify right side
    13,331.79x = 135,463,642.50
  5. Step 5: Solve for x
    x = 135,463,642.50/13,331.79
  6. Step 6: Final answer
    x = 10,160.95

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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.