Home / 20,492.97-28,280.39-11,540.63

Finding the Fourth Proportional to 20,492.97, 28,280.39 and 11,540.63

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Solution

The fourth proportional to 20,492.97, 28,280.39 and 11,540.63 is: 15,926.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.97 : 28,280.39 = 11,540.63 : x
  2. Step 2: Convert to fraction form
    20,492.97/28,280.39 = 11,540.63/x
  3. Step 3: Cross multiply
    20,492.97x = 28,280.39 × 11,540.63
  4. Step 4: Simplify right side
    20,492.97x = 326,373,436.08
  5. Step 5: Solve for x
    x = 326,373,436.08/20,492.97
  6. Step 6: Final answer
    x = 15,926.12

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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.