Home / 10,885.82-16,328.72-7,187.18

Finding the Fourth Proportional to 10,885.82, 16,328.72 and 7,187.18

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Solution

The fourth proportional to 10,885.82, 16,328.72 and 7,187.18 is: 10,780.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.82 : 16,328.72 = 7,187.18 : x
  2. Step 2: Convert to fraction form
    10,885.82/16,328.72 = 7,187.18/x
  3. Step 3: Cross multiply
    10,885.82x = 16,328.72 × 7,187.18
  4. Step 4: Simplify right side
    10,885.82x = 117,357,386.13
  5. Step 5: Solve for x
    x = 117,357,386.13/10,885.82
  6. Step 6: Final answer
    x = 10,780.76

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.