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Finding the Fourth Proportional to 20,044.80, 30,182.40 and 15,436.80

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Solution

The fourth proportional to 20,044.80, 30,182.40 and 15,436.80 is: 23,243.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,044.80 : 30,182.40 = 15,436.80 : x
  2. Step 2: Convert to fraction form
    20,044.80/30,182.40 = 15,436.80/x
  3. Step 3: Cross multiply
    20,044.80x = 30,182.40 × 15,436.80
  4. Step 4: Simplify right side
    20,044.80x = 465,919,672.32
  5. Step 5: Solve for x
    x = 465,919,672.32/20,044.80
  6. Step 6: Final answer
    x = 23,243.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.