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Finding the Fourth Proportional to 26,920.86, 40,387.80 and 8,452.86

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Solution

The fourth proportional to 26,920.86, 40,387.80 and 8,452.86 is: 12,681.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,920.86 : 40,387.80 = 8,452.86 : x
  2. Step 2: Convert to fraction form
    26,920.86/40,387.80 = 8,452.86/x
  3. Step 3: Cross multiply
    26,920.86x = 40,387.80 × 8,452.86
  4. Step 4: Simplify right side
    26,920.86x = 341,392,419.11
  5. Step 5: Solve for x
    x = 341,392,419.11/26,920.86
  6. Step 6: Final answer
    x = 12,681.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.