Home / 40,691.90-61,015.55-12,604.15

Finding the Fourth Proportional to 40,691.90, 61,015.55 and 12,604.15

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Solution

The fourth proportional to 40,691.90, 61,015.55 and 12,604.15 is: 18,899.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,691.90 : 61,015.55 = 12,604.15 : x
  2. Step 2: Convert to fraction form
    40,691.90/61,015.55 = 12,604.15/x
  3. Step 3: Cross multiply
    40,691.90x = 61,015.55 × 12,604.15
  4. Step 4: Simplify right side
    40,691.90x = 769,049,354.46
  5. Step 5: Solve for x
    x = 769,049,354.46/40,691.90
  6. Step 6: Final answer
    x = 18,899.32

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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.