Home / 10,721.76-16,081.20-2,930.64

Finding the Fourth Proportional to 10,721.76, 16,081.20 and 2,930.64

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Solution

The fourth proportional to 10,721.76, 16,081.20 and 2,930.64 is: 4,395.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.76 : 16,081.20 = 2,930.64 : x
  2. Step 2: Convert to fraction form
    10,721.76/16,081.20 = 2,930.64/x
  3. Step 3: Cross multiply
    10,721.76x = 16,081.20 × 2,930.64
  4. Step 4: Simplify right side
    10,721.76x = 47,128,207.97
  5. Step 5: Solve for x
    x = 47,128,207.97/10,721.76
  6. Step 6: Final answer
    x = 4,395.57

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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.