Home / 11,115.58-15,340.89-6,641.80

Finding the Fourth Proportional to 11,115.58, 15,340.89 and 6,641.80

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Solution

The fourth proportional to 11,115.58, 15,340.89 and 6,641.80 is: 9,166.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.58 : 15,340.89 = 6,641.80 : x
  2. Step 2: Convert to fraction form
    11,115.58/15,340.89 = 6,641.80/x
  3. Step 3: Cross multiply
    11,115.58x = 15,340.89 × 6,641.80
  4. Step 4: Simplify right side
    11,115.58x = 101,891,109.76
  5. Step 5: Solve for x
    x = 101,891,109.76/11,115.58
  6. Step 6: Final answer
    x = 9,166.51

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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.