Home / 18,780.78-25,917.51-10,282.97

Finding the Fourth Proportional to 18,780.78, 25,917.51 and 10,282.97

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Solution

The fourth proportional to 18,780.78, 25,917.51 and 10,282.97 is: 14,190.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.78 : 25,917.51 = 10,282.97 : x
  2. Step 2: Convert to fraction form
    18,780.78/25,917.51 = 10,282.97/x
  3. Step 3: Cross multiply
    18,780.78x = 25,917.51 × 10,282.97
  4. Step 4: Simplify right side
    18,780.78x = 266,508,848.22
  5. Step 5: Solve for x
    x = 266,508,848.22/18,780.78
  6. Step 6: Final answer
    x = 14,190.51

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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.