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Finding the Fourth Proportional to 25,565.49, 35,247.39 and 20,949.11

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Solution

The fourth proportional to 25,565.49, 35,247.39 and 20,949.11 is: 28,882.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,565.49 : 35,247.39 = 20,949.11 : x
  2. Step 2: Convert to fraction form
    25,565.49/35,247.39 = 20,949.11/x
  3. Step 3: Cross multiply
    25,565.49x = 35,247.39 × 20,949.11
  4. Step 4: Simplify right side
    25,565.49x = 738,401,405.33
  5. Step 5: Solve for x
    x = 738,401,405.33/25,565.49
  6. Step 6: Final answer
    x = 28,882.74

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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.