Home / 11,861.10-17,772.45-7,470.70

Finding the Fourth Proportional to 11,861.10, 17,772.45 and 7,470.70

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Solution

The fourth proportional to 11,861.10, 17,772.45 and 7,470.70 is: 11,193.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.10 : 17,772.45 = 7,470.70 : x
  2. Step 2: Convert to fraction form
    11,861.10/17,772.45 = 7,470.70/x
  3. Step 3: Cross multiply
    11,861.10x = 17,772.45 × 7,470.70
  4. Step 4: Simplify right side
    11,861.10x = 132,772,642.22
  5. Step 5: Solve for x
    x = 132,772,642.22/11,861.10
  6. Step 6: Final answer
    x = 11,193.96

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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.