Home / 20,941.38-28,921.68-13,002.48

Finding the Fourth Proportional to 20,941.38, 28,921.68 and 13,002.48

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Solution

The fourth proportional to 20,941.38, 28,921.68 and 13,002.48 is: 17,957.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.38 : 28,921.68 = 13,002.48 : x
  2. Step 2: Convert to fraction form
    20,941.38/28,921.68 = 13,002.48/x
  3. Step 3: Cross multiply
    20,941.38x = 28,921.68 × 13,002.48
  4. Step 4: Simplify right side
    20,941.38x = 376,053,565.77
  5. Step 5: Solve for x
    x = 376,053,565.77/20,941.38
  6. Step 6: Final answer
    x = 17,957.44

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1.5x scale

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.