Home / 18,942.60-26,140.92-10,989.57

Finding the Fourth Proportional to 18,942.60, 26,140.92 and 10,989.57

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Solution

The fourth proportional to 18,942.60, 26,140.92 and 10,989.57 is: 15,165.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,942.60 : 26,140.92 = 10,989.57 : x
  2. Step 2: Convert to fraction form
    18,942.60/26,140.92 = 10,989.57/x
  3. Step 3: Cross multiply
    18,942.60x = 26,140.92 × 10,989.57
  4. Step 4: Simplify right side
    18,942.60x = 287,277,470.20
  5. Step 5: Solve for x
    x = 287,277,470.20/18,942.60
  6. Step 6: Final answer
    x = 15,165.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.