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Finding the Fourth Proportional to 14,001.68, 20,979.72 and 5,990.24

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Solution

The fourth proportional to 14,001.68, 20,979.72 and 5,990.24 is: 8,975.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,001.68 : 20,979.72 = 5,990.24 : x
  2. Step 2: Convert to fraction form
    14,001.68/20,979.72 = 5,990.24/x
  3. Step 3: Cross multiply
    14,001.68x = 20,979.72 × 5,990.24
  4. Step 4: Simplify right side
    14,001.68x = 125,673,557.93
  5. Step 5: Solve for x
    x = 125,673,557.93/14,001.68
  6. Step 6: Final answer
    x = 8,975.61

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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.