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Finding the Fourth Proportional to 15,892.40, 21,932.27 and 8,818.88

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Solution

The fourth proportional to 15,892.40, 21,932.27 and 8,818.88 is: 12,170.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,892.40 : 21,932.27 = 8,818.88 : x
  2. Step 2: Convert to fraction form
    15,892.40/21,932.27 = 8,818.88/x
  3. Step 3: Cross multiply
    15,892.40x = 21,932.27 × 8,818.88
  4. Step 4: Simplify right side
    15,892.40x = 193,417,936.57
  5. Step 5: Solve for x
    x = 193,417,936.57/15,892.40
  6. Step 6: Final answer
    x = 12,170.47

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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.