Home / 20,750.94-31,126.25-12,433.32

Finding the Fourth Proportional to 20,750.94, 31,126.25 and 12,433.32

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Solution

The fourth proportional to 20,750.94, 31,126.25 and 12,433.32 is: 18,649.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.94 : 31,126.25 = 12,433.32 : x
  2. Step 2: Convert to fraction form
    20,750.94/31,126.25 = 12,433.32/x
  3. Step 3: Cross multiply
    20,750.94x = 31,126.25 × 12,433.32
  4. Step 4: Simplify right side
    20,750.94x = 387,002,626.65
  5. Step 5: Solve for x
    x = 387,002,626.65/20,750.94
  6. Step 6: Final answer
    x = 18,649.88

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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.