Home / 10,791.50-16,187.90-3,396.20

Finding the Fourth Proportional to 10,791.50, 16,187.90 and 3,396.20

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Solution

The fourth proportional to 10,791.50, 16,187.90 and 3,396.20 is: 5,094.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,791.50 : 16,187.90 = 3,396.20 : x
  2. Step 2: Convert to fraction form
    10,791.50/16,187.90 = 3,396.20/x
  3. Step 3: Cross multiply
    10,791.50x = 16,187.90 × 3,396.20
  4. Step 4: Simplify right side
    10,791.50x = 54,977,248.06
  5. Step 5: Solve for x
    x = 54,977,248.06/10,791.50
  6. Step 6: Final answer
    x = 5,094.50

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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.