Home / 10,621.76-15,932.03-5,078.93

Finding the Fourth Proportional to 10,621.76, 15,932.03 and 5,078.93

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Solution

The fourth proportional to 10,621.76, 15,932.03 and 5,078.93 is: 7,618.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.76 : 15,932.03 = 5,078.93 : x
  2. Step 2: Convert to fraction form
    10,621.76/15,932.03 = 5,078.93/x
  3. Step 3: Cross multiply
    10,621.76x = 15,932.03 × 5,078.93
  4. Step 4: Simplify right side
    10,621.76x = 80,917,665.13
  5. Step 5: Solve for x
    x = 80,917,665.13/10,621.76
  6. Step 6: Final answer
    x = 7,618.10

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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.