Home / 10,121.03-15,177.90-4,278.10

Finding the Fourth Proportional to 10,121.03, 15,177.90 and 4,278.10

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Solution

The fourth proportional to 10,121.03, 15,177.90 and 4,278.10 is: 6,415.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.03 : 15,177.90 = 4,278.10 : x
  2. Step 2: Convert to fraction form
    10,121.03/15,177.90 = 4,278.10/x
  3. Step 3: Cross multiply
    10,121.03x = 15,177.90 × 4,278.10
  4. Step 4: Simplify right side
    10,121.03x = 64,932,573.99
  5. Step 5: Solve for x
    x = 64,932,573.99/10,121.03
  6. Step 6: Final answer
    x = 6,415.61

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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.