Home / 20,943.52-28,902.28-11,383.42

Finding the Fourth Proportional to 20,943.52, 28,902.28 and 11,383.42

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Solution

The fourth proportional to 20,943.52, 28,902.28 and 11,383.42 is: 15,709.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.52 : 28,902.28 = 11,383.42 : x
  2. Step 2: Convert to fraction form
    20,943.52/28,902.28 = 11,383.42/x
  3. Step 3: Cross multiply
    20,943.52x = 28,902.28 × 11,383.42
  4. Step 4: Simplify right side
    20,943.52x = 329,006,792.20
  5. Step 5: Solve for x
    x = 329,006,792.20/20,943.52
  6. Step 6: Final answer
    x = 15,709.24

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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.