Home / 10,791.36-16,187.04-3,000.78

Finding the Fourth Proportional to 10,791.36, 16,187.04 and 3,000.78

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Solution

The fourth proportional to 10,791.36, 16,187.04 and 3,000.78 is: 4,501.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,791.36 : 16,187.04 = 3,000.78 : x
  2. Step 2: Convert to fraction form
    10,791.36/16,187.04 = 3,000.78/x
  3. Step 3: Cross multiply
    10,791.36x = 16,187.04 × 3,000.78
  4. Step 4: Simplify right side
    10,791.36x = 48,573,745.89
  5. Step 5: Solve for x
    x = 48,573,745.89/10,791.36
  6. Step 6: Final answer
    x = 4,501.17

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.