Home / 20,694.12-28,557-11,262.66

Finding the Fourth Proportional to 20,694.12, 28,557 and 11,262.66

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Solution

The fourth proportional to 20,694.12, 28,557 and 11,262.66 is: 15,541.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.12 : 28,557 = 11,262.66 : x
  2. Step 2: Convert to fraction form
    20,694.12/28,557 = 11,262.66/x
  3. Step 3: Cross multiply
    20,694.12x = 28,557 × 11,262.66
  4. Step 4: Simplify right side
    20,694.12x = 321,627,781.62
  5. Step 5: Solve for x
    x = 321,627,781.62/20,694.12
  6. Step 6: Final answer
    x = 15,541.99

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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.