Home / 31,774.15-47,630.24-15,129.71

Finding the Fourth Proportional to 31,774.15, 47,630.24 and 15,129.71

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Solution

The fourth proportional to 31,774.15, 47,630.24 and 15,129.71 is: 22,679.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,774.15 : 47,630.24 = 15,129.71 : x
  2. Step 2: Convert to fraction form
    31,774.15/47,630.24 = 15,129.71/x
  3. Step 3: Cross multiply
    31,774.15x = 47,630.24 × 15,129.71
  4. Step 4: Simplify right side
    31,774.15x = 720,631,718.43
  5. Step 5: Solve for x
    x = 720,631,718.43/31,774.15
  6. Step 6: Final answer
    x = 22,679.81

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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.