Home / 10,376.26-15,549.80-7,781.02

Finding the Fourth Proportional to 10,376.26, 15,549.80 and 7,781.02

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Solution

The fourth proportional to 10,376.26, 15,549.80 and 7,781.02 is: 11,660.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,376.26 : 15,549.80 = 7,781.02 : x
  2. Step 2: Convert to fraction form
    10,376.26/15,549.80 = 7,781.02/x
  3. Step 3: Cross multiply
    10,376.26x = 15,549.80 × 7,781.02
  4. Step 4: Simplify right side
    10,376.26x = 120,993,227.02
  5. Step 5: Solve for x
    x = 120,993,227.02/10,376.26
  6. Step 6: Final answer
    x = 11,660.58

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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.