Home / 21,000.96-31,491.17-9,164.73

Finding the Fourth Proportional to 21,000.96, 31,491.17 and 9,164.73

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Solution

The fourth proportional to 21,000.96, 31,491.17 and 9,164.73 is: 13,742.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.96 : 31,491.17 = 9,164.73 : x
  2. Step 2: Convert to fraction form
    21,000.96/31,491.17 = 9,164.73/x
  3. Step 3: Cross multiply
    21,000.96x = 31,491.17 × 9,164.73
  4. Step 4: Simplify right side
    21,000.96x = 288,608,070.43
  5. Step 5: Solve for x
    x = 288,608,070.43/21,000.96
  6. Step 6: Final answer
    x = 13,742.61

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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.