Home / 10,165.55-15,247.40-3,143.70

Finding the Fourth Proportional to 10,165.55, 15,247.40 and 3,143.70

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Solution

The fourth proportional to 10,165.55, 15,247.40 and 3,143.70 is: 4,715.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,165.55 : 15,247.40 = 3,143.70 : x
  2. Step 2: Convert to fraction form
    10,165.55/15,247.40 = 3,143.70/x
  3. Step 3: Cross multiply
    10,165.55x = 15,247.40 × 3,143.70
  4. Step 4: Simplify right side
    10,165.55x = 47,933,235.66
  5. Step 5: Solve for x
    x = 47,933,235.66/10,165.55
  6. Step 6: Final answer
    x = 4,715.26

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1.5x scale

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.