Home / 11,990.34-16,549.62-7,278.56

Finding the Fourth Proportional to 11,990.34, 16,549.62 and 7,278.56

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Solution

The fourth proportional to 11,990.34, 16,549.62 and 7,278.56 is: 10,046.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.34 : 16,549.62 = 7,278.56 : x
  2. Step 2: Convert to fraction form
    11,990.34/16,549.62 = 7,278.56/x
  3. Step 3: Cross multiply
    11,990.34x = 16,549.62 × 7,278.56
  4. Step 4: Simplify right side
    11,990.34x = 120,457,402.15
  5. Step 5: Solve for x
    x = 120,457,402.15/11,990.34
  6. Step 6: Final answer
    x = 10,046.20

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Double scale
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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.