Home / 20,747.08-31,126.80-9,660.32

Finding the Fourth Proportional to 20,747.08, 31,126.80 and 9,660.32

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Solution

The fourth proportional to 20,747.08, 31,126.80 and 9,660.32 is: 14,493.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.08 : 31,126.80 = 9,660.32 : x
  2. Step 2: Convert to fraction form
    20,747.08/31,126.80 = 9,660.32/x
  3. Step 3: Cross multiply
    20,747.08x = 31,126.80 × 9,660.32
  4. Step 4: Simplify right side
    20,747.08x = 300,694,848.58
  5. Step 5: Solve for x
    x = 300,694,848.58/20,747.08
  6. Step 6: Final answer
    x = 14,493.36

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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.