Home / 12,001.68-17,979.84-6,446.88

Finding the Fourth Proportional to 12,001.68, 17,979.84 and 6,446.88

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Solution

The fourth proportional to 12,001.68, 17,979.84 and 6,446.88 is: 9,658.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,001.68 : 17,979.84 = 6,446.88 : x
  2. Step 2: Convert to fraction form
    12,001.68/17,979.84 = 6,446.88/x
  3. Step 3: Cross multiply
    12,001.68x = 17,979.84 × 6,446.88
  4. Step 4: Simplify right side
    12,001.68x = 115,913,870.90
  5. Step 5: Solve for x
    x = 115,913,870.90/12,001.68
  6. Step 6: Final answer
    x = 9,658.14

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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.