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Finding the Fourth Proportional to 14,459.54, 21,712.85 and 8,947.99

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Solution

The fourth proportional to 14,459.54, 21,712.85 and 8,947.99 is: 13,436.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,459.54 : 21,712.85 = 8,947.99 : x
  2. Step 2: Convert to fraction form
    14,459.54/21,712.85 = 8,947.99/x
  3. Step 3: Cross multiply
    14,459.54x = 21,712.85 × 8,947.99
  4. Step 4: Simplify right side
    14,459.54x = 194,286,380.63
  5. Step 5: Solve for x
    x = 194,286,380.63/14,459.54
  6. Step 6: Final answer
    x = 13,436.56

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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.