Home / 20,160.38-30,251.50-9,772.13

Finding the Fourth Proportional to 20,160.38, 30,251.50 and 9,772.13

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Solution

The fourth proportional to 20,160.38, 30,251.50 and 9,772.13 is: 14,663.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.38 : 30,251.50 = 9,772.13 : x
  2. Step 2: Convert to fraction form
    20,160.38/30,251.50 = 9,772.13/x
  3. Step 3: Cross multiply
    20,160.38x = 30,251.50 × 9,772.13
  4. Step 4: Simplify right side
    20,160.38x = 295,621,590.70
  5. Step 5: Solve for x
    x = 295,621,590.70/20,160.38
  6. Step 6: Final answer
    x = 14,663.49

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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.