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Finding the Fourth Proportional to 18,281,745.78, 25,228,812.78 and 10,132,983.78

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Solution

The fourth proportional to 18,281,745.78, 25,228,812.78 and 10,132,983.78 is: 13,983,519.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,281,745.78 : 25,228,812.78 = 10,132,983.78 : x
  2. Step 2: Convert to fraction form
    18,281,745.78/25,228,812.78 = 10,132,983.78/x
  3. Step 3: Cross multiply
    18,281,745.78x = 25,228,812.78 × 10,132,983.78
  4. Step 4: Simplify right side
    18,281,745.78x = 255,643,150,688,396.72
  5. Step 5: Solve for x
    x = 255,643,150,688,396.72/18,281,745.78
  6. Step 6: Final answer
    x = 13,983,519.61

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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.