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Finding the Fourth Proportional to 15,953.66, 22,013.88 and 8,879.12

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Solution

The fourth proportional to 15,953.66, 22,013.88 and 8,879.12 is: 12,251.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,953.66 : 22,013.88 = 8,879.12 : x
  2. Step 2: Convert to fraction form
    15,953.66/22,013.88 = 8,879.12/x
  3. Step 3: Cross multiply
    15,953.66x = 22,013.88 × 8,879.12
  4. Step 4: Simplify right side
    15,953.66x = 195,463,882.19
  5. Step 5: Solve for x
    x = 195,463,882.19/15,953.66
  6. Step 6: Final answer
    x = 12,251.98

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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.