Home / 10,078.32-15,129-5,982.96

Finding the Fourth Proportional to 10,078.32, 15,129 and 5,982.96

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Solution

The fourth proportional to 10,078.32, 15,129 and 5,982.96 is: 8,981.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,078.32 : 15,129 = 5,982.96 : x
  2. Step 2: Convert to fraction form
    10,078.32/15,129 = 5,982.96/x
  3. Step 3: Cross multiply
    10,078.32x = 15,129 × 5,982.96
  4. Step 4: Simplify right side
    10,078.32x = 90,516,201.84
  5. Step 5: Solve for x
    x = 90,516,201.84/10,078.32
  6. Step 6: Final answer
    x = 8,981.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.