Home / 20,751.17-31,134.20-10,751.12

Finding the Fourth Proportional to 20,751.17, 31,134.20 and 10,751.12

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Solution

The fourth proportional to 20,751.17, 31,134.20 and 10,751.12 is: 16,130.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.17 : 31,134.20 = 10,751.12 : x
  2. Step 2: Convert to fraction form
    20,751.17/31,134.20 = 10,751.12/x
  3. Step 3: Cross multiply
    20,751.17x = 31,134.20 × 10,751.12
  4. Step 4: Simplify right side
    20,751.17x = 334,727,310.88
  5. Step 5: Solve for x
    x = 334,727,310.88/20,751.17
  6. Step 6: Final answer
    x = 16,130.53

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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.