Home / 10,147.60-15,218.70-3,127.60

Finding the Fourth Proportional to 10,147.60, 15,218.70 and 3,127.60

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Solution

The fourth proportional to 10,147.60, 15,218.70 and 3,127.60 is: 4,690.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,147.60 : 15,218.70 = 3,127.60 : x
  2. Step 2: Convert to fraction form
    10,147.60/15,218.70 = 3,127.60/x
  3. Step 3: Cross multiply
    10,147.60x = 15,218.70 × 3,127.60
  4. Step 4: Simplify right side
    10,147.60x = 47,598,006.12
  5. Step 5: Solve for x
    x = 47,598,006.12/10,147.60
  6. Step 6: Final answer
    x = 4,690.57

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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.