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Finding the Fourth Proportional to 15,979.74, 22,053.01 and 8,809.65

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Solution

The fourth proportional to 15,979.74, 22,053.01 and 8,809.65 is: 12,157.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,979.74 : 22,053.01 = 8,809.65 : x
  2. Step 2: Convert to fraction form
    15,979.74/22,053.01 = 8,809.65/x
  3. Step 3: Cross multiply
    15,979.74x = 22,053.01 × 8,809.65
  4. Step 4: Simplify right side
    15,979.74x = 194,279,299.55
  5. Step 5: Solve for x
    x = 194,279,299.55/15,979.74
  6. Step 6: Final answer
    x = 12,157.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.