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Finding the Fourth Proportional to 18,391.96, 27,600.05 and 10,077.81

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Solution

The fourth proportional to 18,391.96, 27,600.05 and 10,077.81 is: 15,123.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.96 : 27,600.05 = 10,077.81 : x
  2. Step 2: Convert to fraction form
    18,391.96/27,600.05 = 10,077.81/x
  3. Step 3: Cross multiply
    18,391.96x = 27,600.05 × 10,077.81
  4. Step 4: Simplify right side
    18,391.96x = 278,148,175.26
  5. Step 5: Solve for x
    x = 278,148,175.26/18,391.96
  6. Step 6: Final answer
    x = 15,123.36

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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.