Home / 12,487.64-18,731.39-5,092.07

Finding the Fourth Proportional to 12,487.64, 18,731.39 and 5,092.07

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Solution

The fourth proportional to 12,487.64, 18,731.39 and 5,092.07 is: 7,638.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.64 : 18,731.39 = 5,092.07 : x
  2. Step 2: Convert to fraction form
    12,487.64/18,731.39 = 5,092.07/x
  3. Step 3: Cross multiply
    12,487.64x = 18,731.39 × 5,092.07
  4. Step 4: Simplify right side
    12,487.64x = 95,381,549.08
  5. Step 5: Solve for x
    x = 95,381,549.08/12,487.64
  6. Step 6: Final answer
    x = 7,638.08

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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.