Home / 10,553.40-15,824.10-3,979.80

Finding the Fourth Proportional to 10,553.40, 15,824.10 and 3,979.80

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Solution

The fourth proportional to 10,553.40, 15,824.10 and 3,979.80 is: 5,967.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,553.40 : 15,824.10 = 3,979.80 : x
  2. Step 2: Convert to fraction form
    10,553.40/15,824.10 = 3,979.80/x
  3. Step 3: Cross multiply
    10,553.40x = 15,824.10 × 3,979.80
  4. Step 4: Simplify right side
    10,553.40x = 62,976,753.18
  5. Step 5: Solve for x
    x = 62,976,753.18/10,553.40
  6. Step 6: Final answer
    x = 5,967.44

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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.