Home / 21,242.08-31,863.18-6,451.12

Finding the Fourth Proportional to 21,242.08, 31,863.18 and 6,451.12

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Solution

The fourth proportional to 21,242.08, 31,863.18 and 6,451.12 is: 9,676.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.08 : 31,863.18 = 6,451.12 : x
  2. Step 2: Convert to fraction form
    21,242.08/31,863.18 = 6,451.12/x
  3. Step 3: Cross multiply
    21,242.08x = 31,863.18 × 6,451.12
  4. Step 4: Simplify right side
    21,242.08x = 205,553,197.76
  5. Step 5: Solve for x
    x = 205,553,197.76/21,242.08
  6. Step 6: Final answer
    x = 9,676.70

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Similar ratio
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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.