Home / 40,976.40-61,473.85-12,515.90

Finding the Fourth Proportional to 40,976.40, 61,473.85 and 12,515.90

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Solution

The fourth proportional to 40,976.40, 61,473.85 and 12,515.90 is: 18,776.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,976.40 : 61,473.85 = 12,515.90 : x
  2. Step 2: Convert to fraction form
    40,976.40/61,473.85 = 12,515.90/x
  3. Step 3: Cross multiply
    40,976.40x = 61,473.85 × 12,515.90
  4. Step 4: Simplify right side
    40,976.40x = 769,400,681.61
  5. Step 5: Solve for x
    x = 769,400,681.61/40,976.40
  6. Step 6: Final answer
    x = 18,776.68

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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.