Home / 10,117.94-15,176.84-2,721.78

Finding the Fourth Proportional to 10,117.94, 15,176.84 and 2,721.78

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Solution

The fourth proportional to 10,117.94, 15,176.84 and 2,721.78 is: 4,082.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,117.94 : 15,176.84 = 2,721.78 : x
  2. Step 2: Convert to fraction form
    10,117.94/15,176.84 = 2,721.78/x
  3. Step 3: Cross multiply
    10,117.94x = 15,176.84 × 2,721.78
  4. Step 4: Simplify right side
    10,117.94x = 41,308,019.58
  5. Step 5: Solve for x
    x = 41,308,019.58/10,117.94
  6. Step 6: Final answer
    x = 4,082.65

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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.