Home / 31,514.30-47,286.20-15,720.55

Finding the Fourth Proportional to 31,514.30, 47,286.20 and 15,720.55

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Solution

The fourth proportional to 31,514.30, 47,286.20 and 15,720.55 is: 23,588.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,514.30 : 47,286.20 = 15,720.55 : x
  2. Step 2: Convert to fraction form
    31,514.30/47,286.20 = 15,720.55/x
  3. Step 3: Cross multiply
    31,514.30x = 47,286.20 × 15,720.55
  4. Step 4: Simplify right side
    31,514.30x = 743,364,933.54
  5. Step 5: Solve for x
    x = 743,364,933.54/31,514.30
  6. Step 6: Final answer
    x = 23,588.18

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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.