Home / 20,705.14-31,062.34-7,557.52

Finding the Fourth Proportional to 20,705.14, 31,062.34 and 7,557.52

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Solution

The fourth proportional to 20,705.14, 31,062.34 and 7,557.52 is: 11,337.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.14 : 31,062.34 = 7,557.52 : x
  2. Step 2: Convert to fraction form
    20,705.14/31,062.34 = 7,557.52/x
  3. Step 3: Cross multiply
    20,705.14x = 31,062.34 × 7,557.52
  4. Step 4: Simplify right side
    20,705.14x = 234,754,255.80
  5. Step 5: Solve for x
    x = 234,754,255.80/20,705.14
  6. Step 6: Final answer
    x = 11,337.97

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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.