Home / 20,504.78-28,296.70-11,552.42

Finding the Fourth Proportional to 20,504.78, 28,296.70 and 11,552.42

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Solution

The fourth proportional to 20,504.78, 28,296.70 and 11,552.42 is: 15,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.78 : 28,296.70 = 11,552.42 : x
  2. Step 2: Convert to fraction form
    20,504.78/28,296.70 = 11,552.42/x
  3. Step 3: Cross multiply
    20,504.78x = 28,296.70 × 11,552.42
  4. Step 4: Simplify right side
    20,504.78x = 326,895,363.01
  5. Step 5: Solve for x
    x = 326,895,363.01/20,504.78
  6. Step 6: Final answer
    x = 15,942.40

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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.