Home / 18,398.80-25,395.23-11,331.15

Finding the Fourth Proportional to 18,398.80, 25,395.23 and 11,331.15

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Solution

The fourth proportional to 18,398.80, 25,395.23 and 11,331.15 is: 15,640.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.80 : 25,395.23 = 11,331.15 : x
  2. Step 2: Convert to fraction form
    18,398.80/25,395.23 = 11,331.15/x
  3. Step 3: Cross multiply
    18,398.80x = 25,395.23 × 11,331.15
  4. Step 4: Simplify right side
    18,398.80x = 287,757,160.41
  5. Step 5: Solve for x
    x = 287,757,160.41/18,398.80
  6. Step 6: Final answer
    x = 15,640.00

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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.