Home / 20,517.78-28,295.73-13,448.10

Finding the Fourth Proportional to 20,517.78, 28,295.73 and 13,448.10

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Solution

The fourth proportional to 20,517.78, 28,295.73 and 13,448.10 is: 18,546.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.78 : 28,295.73 = 13,448.10 : x
  2. Step 2: Convert to fraction form
    20,517.78/28,295.73 = 13,448.10/x
  3. Step 3: Cross multiply
    20,517.78x = 28,295.73 × 13,448.10
  4. Step 4: Simplify right side
    20,517.78x = 380,523,806.61
  5. Step 5: Solve for x
    x = 380,523,806.61/20,517.78
  6. Step 6: Final answer
    x = 18,546.05

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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.