Home / 18,954.20-26,155.51-11,400.75

Finding the Fourth Proportional to 18,954.20, 26,155.51 and 11,400.75

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Solution

The fourth proportional to 18,954.20, 26,155.51 and 11,400.75 is: 15,732.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.20 : 26,155.51 = 11,400.75 : x
  2. Step 2: Convert to fraction form
    18,954.20/26,155.51 = 11,400.75/x
  3. Step 3: Cross multiply
    18,954.20x = 26,155.51 × 11,400.75
  4. Step 4: Simplify right side
    18,954.20x = 298,192,402.13
  5. Step 5: Solve for x
    x = 298,192,402.13/18,954.20
  6. Step 6: Final answer
    x = 15,732.26

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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.