Home / 21,864.12-32,789.18-9,380.79

Finding the Fourth Proportional to 21,864.12, 32,789.18 and 9,380.79

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Solution

The fourth proportional to 21,864.12, 32,789.18 and 9,380.79 is: 14,068.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,864.12 : 32,789.18 = 9,380.79 : x
  2. Step 2: Convert to fraction form
    21,864.12/32,789.18 = 9,380.79/x
  3. Step 3: Cross multiply
    21,864.12x = 32,789.18 × 9,380.79
  4. Step 4: Simplify right side
    21,864.12x = 307,588,364.95
  5. Step 5: Solve for x
    x = 307,588,364.95/21,864.12
  6. Step 6: Final answer
    x = 14,068.18

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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.