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Finding the Fourth Proportional to 26,948.20, 40,422.30 and 8,480.20

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Solution

The fourth proportional to 26,948.20, 40,422.30 and 8,480.20 is: 12,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,948.20 : 40,422.30 = 8,480.20 : x
  2. Step 2: Convert to fraction form
    26,948.20/40,422.30 = 8,480.20/x
  3. Step 3: Cross multiply
    26,948.20x = 40,422.30 × 8,480.20
  4. Step 4: Simplify right side
    26,948.20x = 342,789,188.46
  5. Step 5: Solve for x
    x = 342,789,188.46/26,948.20
  6. Step 6: Final answer
    x = 12,720.30

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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.