Home / 20,592.25-28,417.12-11,517.60

Finding the Fourth Proportional to 20,592.25, 28,417.12 and 11,517.60

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Solution

The fourth proportional to 20,592.25, 28,417.12 and 11,517.60 is: 15,894.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,592.25 : 28,417.12 = 11,517.60 : x
  2. Step 2: Convert to fraction form
    20,592.25/28,417.12 = 11,517.60/x
  3. Step 3: Cross multiply
    20,592.25x = 28,417.12 × 11,517.60
  4. Step 4: Simplify right side
    20,592.25x = 327,297,021.31
  5. Step 5: Solve for x
    x = 327,297,021.31/20,592.25
  6. Step 6: Final answer
    x = 15,894.18

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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.