Home / 18,207.86-25,073.96-15,816.74

Finding the Fourth Proportional to 18,207.86, 25,073.96 and 15,816.74

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Solution

The fourth proportional to 18,207.86, 25,073.96 and 15,816.74 is: 21,781.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,207.86 : 25,073.96 = 15,816.74 : x
  2. Step 2: Convert to fraction form
    18,207.86/25,073.96 = 15,816.74/x
  3. Step 3: Cross multiply
    18,207.86x = 25,073.96 × 15,816.74
  4. Step 4: Simplify right side
    18,207.86x = 396,588,306.09
  5. Step 5: Solve for x
    x = 396,588,306.09/18,207.86
  6. Step 6: Final answer
    x = 21,781.16

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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.