Home / 10,165.28-15,242.30-3,143.36

Finding the Fourth Proportional to 10,165.28, 15,242.30 and 3,143.36

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Solution

The fourth proportional to 10,165.28, 15,242.30 and 3,143.36 is: 4,713.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,165.28 : 15,242.30 = 3,143.36 : x
  2. Step 2: Convert to fraction form
    10,165.28/15,242.30 = 3,143.36/x
  3. Step 3: Cross multiply
    10,165.28x = 15,242.30 × 3,143.36
  4. Step 4: Simplify right side
    10,165.28x = 47,911,944.20
  5. Step 5: Solve for x
    x = 47,911,944.20/10,165.28
  6. Step 6: Final answer
    x = 4,713.30

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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.