Home / 40,895.85-61,343.79-12,815.90

Finding the Fourth Proportional to 40,895.85, 61,343.79 and 12,815.90

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Solution

The fourth proportional to 40,895.85, 61,343.79 and 12,815.90 is: 19,223.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,895.85 : 61,343.79 = 12,815.90 : x
  2. Step 2: Convert to fraction form
    40,895.85/61,343.79 = 12,815.90/x
  3. Step 3: Cross multiply
    40,895.85x = 61,343.79 × 12,815.90
  4. Step 4: Simplify right side
    40,895.85x = 786,175,878.26
  5. Step 5: Solve for x
    x = 786,175,878.26/40,895.85
  6. Step 6: Final answer
    x = 19,223.85

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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.