Home / 10,918.12-16,377.18-3,988.84

Finding the Fourth Proportional to 10,918.12, 16,377.18 and 3,988.84

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Solution

The fourth proportional to 10,918.12, 16,377.18 and 3,988.84 is: 5,983.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.12 : 16,377.18 = 3,988.84 : x
  2. Step 2: Convert to fraction form
    10,918.12/16,377.18 = 3,988.84/x
  3. Step 3: Cross multiply
    10,918.12x = 16,377.18 × 3,988.84
  4. Step 4: Simplify right side
    10,918.12x = 65,325,950.67
  5. Step 5: Solve for x
    x = 65,325,950.67/10,918.12
  6. Step 6: Final answer
    x = 5,983.26

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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.