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Finding the Fourth Proportional to 26,959.10, 40,431.45 and 8,239.10

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Solution

The fourth proportional to 26,959.10, 40,431.45 and 8,239.10 is: 12,356.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,959.10 : 40,431.45 = 8,239.10 : x
  2. Step 2: Convert to fraction form
    26,959.10/40,431.45 = 8,239.10/x
  3. Step 3: Cross multiply
    26,959.10x = 40,431.45 × 8,239.10
  4. Step 4: Simplify right side
    26,959.10x = 333,118,759.70
  5. Step 5: Solve for x
    x = 333,118,759.70/26,959.10
  6. Step 6: Final answer
    x = 12,356.45

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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.