Home / 31,740.89-47,546.75-20,613.84

Finding the Fourth Proportional to 31,740.89, 47,546.75 and 20,613.84

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Solution

The fourth proportional to 31,740.89, 47,546.75 and 20,613.84 is: 30,878.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,740.89 : 47,546.75 = 20,613.84 : x
  2. Step 2: Convert to fraction form
    31,740.89/47,546.75 = 20,613.84/x
  3. Step 3: Cross multiply
    31,740.89x = 47,546.75 × 20,613.84
  4. Step 4: Simplify right side
    31,740.89x = 980,121,121.75
  5. Step 5: Solve for x
    x = 980,121,121.75/31,740.89
  6. Step 6: Final answer
    x = 30,878.82

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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.