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Finding the Fourth Proportional to 26,908.31, 40,368.95 and 8,440.31

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Solution

The fourth proportional to 26,908.31, 40,368.95 and 8,440.31 is: 12,662.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,908.31 : 40,368.95 = 8,440.31 : x
  2. Step 2: Convert to fraction form
    26,908.31/40,368.95 = 8,440.31/x
  3. Step 3: Cross multiply
    26,908.31x = 40,368.95 × 8,440.31
  4. Step 4: Simplify right side
    26,908.31x = 340,726,542.75
  5. Step 5: Solve for x
    x = 340,726,542.75/26,908.31
  6. Step 6: Final answer
    x = 12,662.50

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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.