Home / 10,387.74-15,566.43-5,121.18

Finding the Fourth Proportional to 10,387.74, 15,566.43 and 5,121.18

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Solution

The fourth proportional to 10,387.74, 15,566.43 and 5,121.18 is: 7,674.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.74 : 15,566.43 = 5,121.18 : x
  2. Step 2: Convert to fraction form
    10,387.74/15,566.43 = 5,121.18/x
  3. Step 3: Cross multiply
    10,387.74x = 15,566.43 × 5,121.18
  4. Step 4: Simplify right side
    10,387.74x = 79,718,489.99
  5. Step 5: Solve for x
    x = 79,718,489.99/10,387.74
  6. Step 6: Final answer
    x = 7,674.29

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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.