Home / 10,480.86-15,721.85-2,689.74

Finding the Fourth Proportional to 10,480.86, 15,721.85 and 2,689.74

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Solution

The fourth proportional to 10,480.86, 15,721.85 and 2,689.74 is: 4,034.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,480.86 : 15,721.85 = 2,689.74 : x
  2. Step 2: Convert to fraction form
    10,480.86/15,721.85 = 2,689.74/x
  3. Step 3: Cross multiply
    10,480.86x = 15,721.85 × 2,689.74
  4. Step 4: Simplify right side
    10,480.86x = 42,287,688.82
  5. Step 5: Solve for x
    x = 42,287,688.82/10,480.86
  6. Step 6: Final answer
    x = 4,034.75

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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.