Home / 20,711.04-31,060.80-9,029.76

Finding the Fourth Proportional to 20,711.04, 31,060.80 and 9,029.76

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Solution

The fourth proportional to 20,711.04, 31,060.80 and 9,029.76 is: 13,542.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.04 : 31,060.80 = 9,029.76 : x
  2. Step 2: Convert to fraction form
    20,711.04/31,060.80 = 9,029.76/x
  3. Step 3: Cross multiply
    20,711.04x = 31,060.80 × 9,029.76
  4. Step 4: Simplify right side
    20,711.04x = 280,471,569.41
  5. Step 5: Solve for x
    x = 280,471,569.41/20,711.04
  6. Step 6: Final answer
    x = 13,542.13

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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.