Home / 20,753.75-31,130.52-9,654.32

Finding the Fourth Proportional to 20,753.75, 31,130.52 and 9,654.32

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Solution

The fourth proportional to 20,753.75, 31,130.52 and 9,654.32 is: 14,481.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.75 : 31,130.52 = 9,654.32 : x
  2. Step 2: Convert to fraction form
    20,753.75/31,130.52 = 9,654.32/x
  3. Step 3: Cross multiply
    20,753.75x = 31,130.52 × 9,654.32
  4. Step 4: Simplify right side
    20,753.75x = 300,544,001.85
  5. Step 5: Solve for x
    x = 300,544,001.85/20,753.75
  6. Step 6: Final answer
    x = 14,481.43

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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.