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Finding the Fourth Proportional to 26,821.80, 40,239.90 and 23,920.20

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Solution

The fourth proportional to 26,821.80, 40,239.90 and 23,920.20 is: 35,886.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,821.80 : 40,239.90 = 23,920.20 : x
  2. Step 2: Convert to fraction form
    26,821.80/40,239.90 = 23,920.20/x
  3. Step 3: Cross multiply
    26,821.80x = 40,239.90 × 23,920.20
  4. Step 4: Simplify right side
    26,821.80x = 962,546,455.98
  5. Step 5: Solve for x
    x = 962,546,455.98/26,821.80
  6. Step 6: Final answer
    x = 35,886.72

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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.