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Finding the Fourth Proportional to 15,939.74, 21,996.25 and 8,866.01

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Solution

The fourth proportional to 15,939.74, 21,996.25 and 8,866.01 is: 12,234.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939.74 : 21,996.25 = 8,866.01 : x
  2. Step 2: Convert to fraction form
    15,939.74/21,996.25 = 8,866.01/x
  3. Step 3: Cross multiply
    15,939.74x = 21,996.25 × 8,866.01
  4. Step 4: Simplify right side
    15,939.74x = 195,018,972.46
  5. Step 5: Solve for x
    x = 195,018,972.46/15,939.74
  6. Step 6: Final answer
    x = 12,234.76

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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.