Home / 18,767.48-28,160.94-13,615.88

Finding the Fourth Proportional to 18,767.48, 28,160.94 and 13,615.88

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Solution

The fourth proportional to 18,767.48, 28,160.94 and 13,615.88 is: 20,430.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,767.48 : 28,160.94 = 13,615.88 : x
  2. Step 2: Convert to fraction form
    18,767.48/28,160.94 = 13,615.88/x
  3. Step 3: Cross multiply
    18,767.48x = 28,160.94 × 13,615.88
  4. Step 4: Simplify right side
    18,767.48x = 383,435,979.73
  5. Step 5: Solve for x
    x = 383,435,979.73/18,767.48
  6. Step 6: Final answer
    x = 20,430.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.