Home / 20,290.08-28,036.08-15,614.76

Finding the Fourth Proportional to 20,290.08, 28,036.08 and 15,614.76

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Solution

The fourth proportional to 20,290.08, 28,036.08 and 15,614.76 is: 21,575.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.08 : 28,036.08 = 15,614.76 : x
  2. Step 2: Convert to fraction form
    20,290.08/28,036.08 = 15,614.76/x
  3. Step 3: Cross multiply
    20,290.08x = 28,036.08 × 15,614.76
  4. Step 4: Simplify right side
    20,290.08x = 437,776,660.54
  5. Step 5: Solve for x
    x = 437,776,660.54/20,290.08
  6. Step 6: Final answer
    x = 21,575.90

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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.