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Finding the Fourth Proportional to 28,614.74, 42,922.12 and 8,888

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Solution

The fourth proportional to 28,614.74, 42,922.12 and 8,888 is: 13,332.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,614.74 : 42,922.12 = 8,888 : x
  2. Step 2: Convert to fraction form
    28,614.74/42,922.12 = 8,888/x
  3. Step 3: Cross multiply
    28,614.74x = 42,922.12 × 8,888
  4. Step 4: Simplify right side
    28,614.74x = 381,491,802.56
  5. Step 5: Solve for x
    x = 381,491,802.56/28,614.74
  6. Step 6: Final answer
    x = 13,332.00

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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.