Home / 18,116.78-25,001.42-10,945.70

Finding the Fourth Proportional to 18,116.78, 25,001.42 and 10,945.70

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Solution

The fourth proportional to 18,116.78, 25,001.42 and 10,945.70 is: 15,105.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,116.78 : 25,001.42 = 10,945.70 : x
  2. Step 2: Convert to fraction form
    18,116.78/25,001.42 = 10,945.70/x
  3. Step 3: Cross multiply
    18,116.78x = 25,001.42 × 10,945.70
  4. Step 4: Simplify right side
    18,116.78x = 273,657,956.91
  5. Step 5: Solve for x
    x = 273,657,956.91/18,116.78
  6. Step 6: Final answer
    x = 15,105.22

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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.