Home / 12,432.91-18,641.34-5,321.79

Finding the Fourth Proportional to 12,432.91, 18,641.34 and 5,321.79

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Solution

The fourth proportional to 12,432.91, 18,641.34 and 5,321.79 is: 7,979.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,432.91 : 18,641.34 = 5,321.79 : x
  2. Step 2: Convert to fraction form
    12,432.91/18,641.34 = 5,321.79/x
  3. Step 3: Cross multiply
    12,432.91x = 18,641.34 × 5,321.79
  4. Step 4: Simplify right side
    12,432.91x = 99,205,296.80
  5. Step 5: Solve for x
    x = 99,205,296.80/12,432.91
  6. Step 6: Final answer
    x = 7,979.25

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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.