Home / 11,189.04-15,440.92-6,999.68

Finding the Fourth Proportional to 11,189.04, 15,440.92 and 6,999.68

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Solution

The fourth proportional to 11,189.04, 15,440.92 and 6,999.68 is: 9,659.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.04 : 15,440.92 = 6,999.68 : x
  2. Step 2: Convert to fraction form
    11,189.04/15,440.92 = 6,999.68/x
  3. Step 3: Cross multiply
    11,189.04x = 15,440.92 × 6,999.68
  4. Step 4: Simplify right side
    11,189.04x = 108,081,498.91
  5. Step 5: Solve for x
    x = 108,081,498.91/11,189.04
  6. Step 6: Final answer
    x = 9,659.59

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Double scale
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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.