Home / 31,724.53-43,760.00-20,408.76

Finding the Fourth Proportional to 31,724.53, 43,760.00 and 20,408.76

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Solution

The fourth proportional to 31,724.53, 43,760.00 and 20,408.76 is: 28,151.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,724.53 : 43,760.00 = 20,408.76 : x
  2. Step 2: Convert to fraction form
    31,724.53/43,760.00 = 20,408.76/x
  3. Step 3: Cross multiply
    31,724.53x = 43,760.00 × 20,408.76
  4. Step 4: Simplify right side
    31,724.53x = 893,087,388.62
  5. Step 5: Solve for x
    x = 893,087,388.62/31,724.53
  6. Step 6: Final answer
    x = 28,151.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.