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Finding the Fourth Proportional to 26,989.20, 40,435.20 and 23,101.20

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Solution

The fourth proportional to 26,989.20, 40,435.20 and 23,101.20 is: 34,610.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,989.20 : 40,435.20 = 23,101.20 : x
  2. Step 2: Convert to fraction form
    26,989.20/40,435.20 = 23,101.20/x
  3. Step 3: Cross multiply
    26,989.20x = 40,435.20 × 23,101.20
  4. Step 4: Simplify right side
    26,989.20x = 934,101,642.24
  5. Step 5: Solve for x
    x = 934,101,642.24/26,989.20
  6. Step 6: Final answer
    x = 34,610.20

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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.