Home / 31,686.24-47,540.32-18,370.80

Finding the Fourth Proportional to 31,686.24, 47,540.32 and 18,370.80

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Solution

The fourth proportional to 31,686.24, 47,540.32 and 18,370.80 is: 27,562.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,686.24 : 47,540.32 = 18,370.80 : x
  2. Step 2: Convert to fraction form
    31,686.24/47,540.32 = 18,370.80/x
  3. Step 3: Cross multiply
    31,686.24x = 47,540.32 × 18,370.80
  4. Step 4: Simplify right side
    31,686.24x = 873,353,710.66
  5. Step 5: Solve for x
    x = 873,353,710.66/31,686.24
  6. Step 6: Final answer
    x = 27,562.55

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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.