Home / 11,118.40-15,343.36-6,644.76

Finding the Fourth Proportional to 11,118.40, 15,343.36 and 6,644.76

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Solution

The fourth proportional to 11,118.40, 15,343.36 and 6,644.76 is: 9,169.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,118.40 : 15,343.36 = 6,644.76 : x
  2. Step 2: Convert to fraction form
    11,118.40/15,343.36 = 6,644.76/x
  3. Step 3: Cross multiply
    11,118.40x = 15,343.36 × 6,644.76
  4. Step 4: Simplify right side
    11,118.40x = 101,952,944.79
  5. Step 5: Solve for x
    x = 101,952,944.79/11,118.40
  6. Step 6: Final answer
    x = 9,169.75

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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.