Home / 28,572.30-39,428.64-15,996.78

Finding the Fourth Proportional to 28,572.30, 39,428.64 and 15,996.78

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Solution

The fourth proportional to 28,572.30, 39,428.64 and 15,996.78 is: 22,074.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,572.30 : 39,428.64 = 15,996.78 : x
  2. Step 2: Convert to fraction form
    28,572.30/39,428.64 = 15,996.78/x
  3. Step 3: Cross multiply
    28,572.30x = 39,428.64 × 15,996.78
  4. Step 4: Simplify right side
    28,572.30x = 630,731,279.78
  5. Step 5: Solve for x
    x = 630,731,279.78/28,572.30
  6. Step 6: Final answer
    x = 22,074.92

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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.