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Finding the Fourth Proportional to 26,442.51, 39,663.90 and 8,912.49

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Solution

The fourth proportional to 26,442.51, 39,663.90 and 8,912.49 is: 13,368.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,442.51 : 39,663.90 = 8,912.49 : x
  2. Step 2: Convert to fraction form
    26,442.51/39,663.90 = 8,912.49/x
  3. Step 3: Cross multiply
    26,442.51x = 39,663.90 × 8,912.49
  4. Step 4: Simplify right side
    26,442.51x = 353,504,112.11
  5. Step 5: Solve for x
    x = 353,504,112.11/26,442.51
  6. Step 6: Final answer
    x = 13,368.78

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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.