Home / 10,517.40-15,764.16-5,312.28

Finding the Fourth Proportional to 10,517.40, 15,764.16 and 5,312.28

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Solution

The fourth proportional to 10,517.40, 15,764.16 and 5,312.28 is: 7,962.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,517.40 : 15,764.16 = 5,312.28 : x
  2. Step 2: Convert to fraction form
    10,517.40/15,764.16 = 5,312.28/x
  3. Step 3: Cross multiply
    10,517.40x = 15,764.16 × 5,312.28
  4. Step 4: Simplify right side
    10,517.40x = 83,743,631.88
  5. Step 5: Solve for x
    x = 83,743,631.88/10,517.40
  6. Step 6: Final answer
    x = 7,962.39

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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.