Home / 31,859.20-47,771.52-13,392.64

Finding the Fourth Proportional to 31,859.20, 47,771.52 and 13,392.64

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Solution

The fourth proportional to 31,859.20, 47,771.52 and 13,392.64 is: 20,081.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,859.20 : 47,771.52 = 13,392.64 : x
  2. Step 2: Convert to fraction form
    31,859.20/47,771.52 = 13,392.64/x
  3. Step 3: Cross multiply
    31,859.20x = 47,771.52 × 13,392.64
  4. Step 4: Simplify right side
    31,859.20x = 639,786,769.61
  5. Step 5: Solve for x
    x = 639,786,769.61/31,859.20
  6. Step 6: Final answer
    x = 20,081.70

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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.