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Finding the Fourth Proportional to 26,689.86, 40,039.14 and 8,221.86

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Solution

The fourth proportional to 26,689.86, 40,039.14 and 8,221.86 is: 12,334.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,689.86 : 40,039.14 = 8,221.86 : x
  2. Step 2: Convert to fraction form
    26,689.86/40,039.14 = 8,221.86/x
  3. Step 3: Cross multiply
    26,689.86x = 40,039.14 × 8,221.86
  4. Step 4: Simplify right side
    26,689.86x = 329,196,203.60
  5. Step 5: Solve for x
    x = 329,196,203.60/26,689.86
  6. Step 6: Final answer
    x = 12,334.13

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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.