Home / 11,239.72-16,845.18-5,387.56

Finding the Fourth Proportional to 11,239.72, 16,845.18 and 5,387.56

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Solution

The fourth proportional to 11,239.72, 16,845.18 and 5,387.56 is: 8,074.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239.72 : 16,845.18 = 5,387.56 : x
  2. Step 2: Convert to fraction form
    11,239.72/16,845.18 = 5,387.56/x
  3. Step 3: Cross multiply
    11,239.72x = 16,845.18 × 5,387.56
  4. Step 4: Simplify right side
    11,239.72x = 90,754,417.96
  5. Step 5: Solve for x
    x = 90,754,417.96/11,239.72
  6. Step 6: Final answer
    x = 8,074.44

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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.