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Finding the Fourth Proportional to 26,938.88, 40,414.88 and 8,470.88

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Solution

The fourth proportional to 26,938.88, 40,414.88 and 8,470.88 is: 12,708.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,938.88 : 40,414.88 = 8,470.88 : x
  2. Step 2: Convert to fraction form
    26,938.88/40,414.88 = 8,470.88/x
  3. Step 3: Cross multiply
    26,938.88x = 40,414.88 × 8,470.88
  4. Step 4: Simplify right side
    26,938.88x = 342,349,598.69
  5. Step 5: Solve for x
    x = 342,349,598.69/26,938.88
  6. Step 6: Final answer
    x = 12,708.38

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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.