Home / 18,616.91-25,697.33-11,920.58

Finding the Fourth Proportional to 18,616.91, 25,697.33 and 11,920.58

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Solution

The fourth proportional to 18,616.91, 25,697.33 and 11,920.58 is: 16,454.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616.91 : 25,697.33 = 11,920.58 : x
  2. Step 2: Convert to fraction form
    18,616.91/25,697.33 = 11,920.58/x
  3. Step 3: Cross multiply
    18,616.91x = 25,697.33 × 11,920.58
  4. Step 4: Simplify right side
    18,616.91x = 306,327,018.45
  5. Step 5: Solve for x
    x = 306,327,018.45/18,616.91
  6. Step 6: Final answer
    x = 16,454.24

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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.