Home / 20,470.19-30,641.72-11,086.90

Finding the Fourth Proportional to 20,470.19, 30,641.72 and 11,086.90

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Solution

The fourth proportional to 20,470.19, 30,641.72 and 11,086.90 is: 16,595.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.19 : 30,641.72 = 11,086.90 : x
  2. Step 2: Convert to fraction form
    20,470.19/30,641.72 = 11,086.90/x
  3. Step 3: Cross multiply
    20,470.19x = 30,641.72 × 11,086.90
  4. Step 4: Simplify right side
    20,470.19x = 339,721,553.43
  5. Step 5: Solve for x
    x = 339,721,553.43/20,470.19
  6. Step 6: Final answer
    x = 16,595.92

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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.