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Finding the Fourth Proportional to 21,479.04, 32,207.04 and 9,789.12

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Solution

The fourth proportional to 21,479.04, 32,207.04 and 9,789.12 is: 14,678.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.04 : 32,207.04 = 9,789.12 : x
  2. Step 2: Convert to fraction form
    21,479.04/32,207.04 = 9,789.12/x
  3. Step 3: Cross multiply
    21,479.04x = 32,207.04 × 9,789.12
  4. Step 4: Simplify right side
    21,479.04x = 315,278,579.40
  5. Step 5: Solve for x
    x = 315,278,579.40/21,479.04
  6. Step 6: Final answer
    x = 14,678.43

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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.