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Finding the Fourth Proportional to 26,686.86, 40,034.64 and 8,218.86

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Solution

The fourth proportional to 26,686.86, 40,034.64 and 8,218.86 is: 12,329.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,686.86 : 40,034.64 = 8,218.86 : x
  2. Step 2: Convert to fraction form
    26,686.86/40,034.64 = 8,218.86/x
  3. Step 3: Cross multiply
    26,686.86x = 40,034.64 × 8,218.86
  4. Step 4: Simplify right side
    26,686.86x = 329,039,101.31
  5. Step 5: Solve for x
    x = 329,039,101.31/26,686.86
  6. Step 6: Final answer
    x = 12,329.63

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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.