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Finding the Fourth Proportional to 26,801.40, 40,191.80 and 12,750.60

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Solution

The fourth proportional to 26,801.40, 40,191.80 and 12,750.60 is: 19,121.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,801.40 : 40,191.80 = 12,750.60 : x
  2. Step 2: Convert to fraction form
    26,801.40/40,191.80 = 12,750.60/x
  3. Step 3: Cross multiply
    26,801.40x = 40,191.80 × 12,750.60
  4. Step 4: Simplify right side
    26,801.40x = 512,469,565.08
  5. Step 5: Solve for x
    x = 512,469,565.08/26,801.40
  6. Step 6: Final answer
    x = 19,121.00

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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.