Home / 11,118.12-15,340.71-6,640.23

Finding the Fourth Proportional to 11,118.12, 15,340.71 and 6,640.23

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Solution

The fourth proportional to 11,118.12, 15,340.71 and 6,640.23 is: 9,162.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,118.12 : 15,340.71 = 6,640.23 : x
  2. Step 2: Convert to fraction form
    11,118.12/15,340.71 = 6,640.23/x
  3. Step 3: Cross multiply
    11,118.12x = 15,340.71 × 6,640.23
  4. Step 4: Simplify right side
    11,118.12x = 101,865,842.76
  5. Step 5: Solve for x
    x = 101,865,842.76/11,118.12
  6. Step 6: Final answer
    x = 9,162.15

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Half scale
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Double scale
Find fourth proportional to 11,119.12, 15,342.09 and 6,641.23
Similar ratio
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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.