Home / 31,108.85-46,656.87-8,917.30

Finding the Fourth Proportional to 31,108.85, 46,656.87 and 8,917.30

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Solution

The fourth proportional to 31,108.85, 46,656.87 and 8,917.30 is: 13,374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,108.85 : 46,656.87 = 8,917.30 : x
  2. Step 2: Convert to fraction form
    31,108.85/46,656.87 = 8,917.30/x
  3. Step 3: Cross multiply
    31,108.85x = 46,656.87 × 8,917.30
  4. Step 4: Simplify right side
    31,108.85x = 416,053,306.85
  5. Step 5: Solve for x
    x = 416,053,306.85/31,108.85
  6. Step 6: Final answer
    x = 13,374.11

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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.