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Finding the Fourth Proportional to 12,897.60, 17,799.84 and 7,589.76

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Solution

The fourth proportional to 12,897.60, 17,799.84 and 7,589.76 is: 10,474.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,897.60 : 17,799.84 = 7,589.76 : x
  2. Step 2: Convert to fraction form
    12,897.60/17,799.84 = 7,589.76/x
  3. Step 3: Cross multiply
    12,897.60x = 17,799.84 × 7,589.76
  4. Step 4: Simplify right side
    12,897.60x = 135,096,513.64
  5. Step 5: Solve for x
    x = 135,096,513.64/12,897.60
  6. Step 6: Final answer
    x = 10,474.55

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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.