Home / 20,712.28-31,069.74-7,562.95

Finding the Fourth Proportional to 20,712.28, 31,069.74 and 7,562.95

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Solution

The fourth proportional to 20,712.28, 31,069.74 and 7,562.95 is: 11,344.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.28 : 31,069.74 = 7,562.95 : x
  2. Step 2: Convert to fraction form
    20,712.28/31,069.74 = 7,562.95/x
  3. Step 3: Cross multiply
    20,712.28x = 31,069.74 × 7,562.95
  4. Step 4: Simplify right side
    20,712.28x = 234,978,890.13
  5. Step 5: Solve for x
    x = 234,978,890.13/20,712.28
  6. Step 6: Final answer
    x = 11,344.91

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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.