Home / 31,789.56-47,684.33-13,079.78

Finding the Fourth Proportional to 31,789.56, 47,684.33 and 13,079.78

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Solution

The fourth proportional to 31,789.56, 47,684.33 and 13,079.78 is: 19,619.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,789.56 : 47,684.33 = 13,079.78 : x
  2. Step 2: Convert to fraction form
    31,789.56/47,684.33 = 13,079.78/x
  3. Step 3: Cross multiply
    31,789.56x = 47,684.33 × 13,079.78
  4. Step 4: Simplify right side
    31,789.56x = 623,700,469.89
  5. Step 5: Solve for x
    x = 623,700,469.89/31,789.56
  6. Step 6: Final answer
    x = 19,619.66

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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.