Home / 20,948.52-28,907.10-11,516.88

Finding the Fourth Proportional to 20,948.52, 28,907.10 and 11,516.88

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Solution

The fourth proportional to 20,948.52, 28,907.10 and 11,516.88 is: 15,892.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.52 : 28,907.10 = 11,516.88 : x
  2. Step 2: Convert to fraction form
    20,948.52/28,907.10 = 11,516.88/x
  3. Step 3: Cross multiply
    20,948.52x = 28,907.10 × 11,516.88
  4. Step 4: Simplify right side
    20,948.52x = 332,919,601.85
  5. Step 5: Solve for x
    x = 332,919,601.85/20,948.52
  6. Step 6: Final answer
    x = 15,892.27

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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.