Home / 11,029.86-15,221.12-6,721.71

Finding the Fourth Proportional to 11,029.86, 15,221.12 and 6,721.71

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Solution

The fourth proportional to 11,029.86, 15,221.12 and 6,721.71 is: 9,275.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,029.86 : 15,221.12 = 6,721.71 : x
  2. Step 2: Convert to fraction form
    11,029.86/15,221.12 = 6,721.71/x
  3. Step 3: Cross multiply
    11,029.86x = 15,221.12 × 6,721.71
  4. Step 4: Simplify right side
    11,029.86x = 102,311,863.83
  5. Step 5: Solve for x
    x = 102,311,863.83/11,029.86
  6. Step 6: Final answer
    x = 9,275.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.