Home / 31,608-43,613.28-20,423.52

Finding the Fourth Proportional to 31,608, 43,613.28 and 20,423.52

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Solution

The fourth proportional to 31,608, 43,613.28 and 20,423.52 is: 28,180.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,608 : 43,613.28 = 20,423.52 : x
  2. Step 2: Convert to fraction form
    31,608/43,613.28 = 20,423.52/x
  3. Step 3: Cross multiply
    31,608x = 43,613.28 × 20,423.52
  4. Step 4: Simplify right side
    31,608x = 890,736,696.35
  5. Step 5: Solve for x
    x = 890,736,696.35/31,608
  6. Step 6: Final answer
    x = 28,180.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.