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Finding the Fourth Proportional to 12,585.79, 18,875.31 and 5,998.87

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Solution

The fourth proportional to 12,585.79, 18,875.31 and 5,998.87 is: 8,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.79 : 18,875.31 = 5,998.87 : x
  2. Step 2: Convert to fraction form
    12,585.79/18,875.31 = 5,998.87/x
  3. Step 3: Cross multiply
    12,585.79x = 18,875.31 × 5,998.87
  4. Step 4: Simplify right side
    12,585.79x = 113,230,530.90
  5. Step 5: Solve for x
    x = 113,230,530.90/12,585.79
  6. Step 6: Final answer
    x = 8,996.70

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Double scale
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Similar ratio
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1.5x scale

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.