Home / 15,985.85-23,985.68-8,581.66

Finding the Fourth Proportional to 15,985.85, 23,985.68 and 8,581.66

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Solution

The fourth proportional to 15,985.85, 23,985.68 and 8,581.66 is: 12,876.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,985.85 : 23,985.68 = 8,581.66 : x
  2. Step 2: Convert to fraction form
    15,985.85/23,985.68 = 8,581.66/x
  3. Step 3: Cross multiply
    15,985.85x = 23,985.68 × 8,581.66
  4. Step 4: Simplify right side
    15,985.85x = 205,836,787.79
  5. Step 5: Solve for x
    x = 205,836,787.79/15,985.85
  6. Step 6: Final answer
    x = 12,876.19

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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.