Home / 10,437.20-15,657.53-5,172.47

Finding the Fourth Proportional to 10,437.20, 15,657.53 and 5,172.47

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Solution

The fourth proportional to 10,437.20, 15,657.53 and 5,172.47 is: 7,759.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,437.20 : 15,657.53 = 5,172.47 : x
  2. Step 2: Convert to fraction form
    10,437.20/15,657.53 = 5,172.47/x
  3. Step 3: Cross multiply
    10,437.20x = 15,657.53 × 5,172.47
  4. Step 4: Simplify right side
    10,437.20x = 80,988,000.05
  5. Step 5: Solve for x
    x = 80,988,000.05/10,437.20
  6. Step 6: Final answer
    x = 7,759.55

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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.