Home / 18,171,889.68-25,077,286.23-9,912,129.72

Finding the Fourth Proportional to 18,171,889.68, 25,077,286.23 and 9,912,129.72

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Solution

The fourth proportional to 18,171,889.68, 25,077,286.23 and 9,912,129.72 is: 13,678,781.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,171,889.68 : 25,077,286.23 = 9,912,129.72 : x
  2. Step 2: Convert to fraction form
    18,171,889.68/25,077,286.23 = 9,912,129.72/x
  3. Step 3: Cross multiply
    18,171,889.68x = 25,077,286.23 × 9,912,129.72
  4. Step 4: Simplify right side
    18,171,889.68x = 248,569,314,137,329.78
  5. Step 5: Solve for x
    x = 248,569,314,137,329.78/18,171,889.68
  6. Step 6: Final answer
    x = 13,678,781.82

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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.