Home / 18,620.82-25,701.57-12,330.90

Finding the Fourth Proportional to 18,620.82, 25,701.57 and 12,330.90

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Solution

The fourth proportional to 18,620.82, 25,701.57 and 12,330.90 is: 17,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.82 : 25,701.57 = 12,330.90 : x
  2. Step 2: Convert to fraction form
    18,620.82/25,701.57 = 12,330.90/x
  3. Step 3: Cross multiply
    18,620.82x = 25,701.57 × 12,330.90
  4. Step 4: Simplify right side
    18,620.82x = 316,923,489.51
  5. Step 5: Solve for x
    x = 316,923,489.51/18,620.82
  6. Step 6: Final answer
    x = 17,019.85

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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.