Home / 28,177.11-42,266.07-13,387.55

Finding the Fourth Proportional to 28,177.11, 42,266.07 and 13,387.55

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Solution

The fourth proportional to 28,177.11, 42,266.07 and 13,387.55 is: 20,081.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.11 : 42,266.07 = 13,387.55 : x
  2. Step 2: Convert to fraction form
    28,177.11/42,266.07 = 13,387.55/x
  3. Step 3: Cross multiply
    28,177.11x = 42,266.07 × 13,387.55
  4. Step 4: Simplify right side
    28,177.11x = 565,838,914.10
  5. Step 5: Solve for x
    x = 565,838,914.10/28,177.11
  6. Step 6: Final answer
    x = 20,081.51

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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.