Home / 18,780.68-25,917.12-10,282.72

Finding the Fourth Proportional to 18,780.68, 25,917.12 and 10,282.72

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Solution

The fourth proportional to 18,780.68, 25,917.12 and 10,282.72 is: 14,190.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.68 : 25,917.12 = 10,282.72 : x
  2. Step 2: Convert to fraction form
    18,780.68/25,917.12 = 10,282.72/x
  3. Step 3: Cross multiply
    18,780.68x = 25,917.12 × 10,282.72
  4. Step 4: Simplify right side
    18,780.68x = 266,498,488.17
  5. Step 5: Solve for x
    x = 266,498,488.17/18,780.68
  6. Step 6: Final answer
    x = 14,190.03

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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.