Home / 20,511.64-28,306.56-11,559.44

Finding the Fourth Proportional to 20,511.64, 28,306.56 and 11,559.44

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Solution

The fourth proportional to 20,511.64, 28,306.56 and 11,559.44 is: 15,952.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.64 : 28,306.56 = 11,559.44 : x
  2. Step 2: Convert to fraction form
    20,511.64/28,306.56 = 11,559.44/x
  3. Step 3: Cross multiply
    20,511.64x = 28,306.56 × 11,559.44
  4. Step 4: Simplify right side
    20,511.64x = 327,207,981.93
  5. Step 5: Solve for x
    x = 327,207,981.93/20,511.64
  6. Step 6: Final answer
    x = 15,952.31

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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.