Home / 11,239.40-15,511.72-6,765.38

Finding the Fourth Proportional to 11,239.40, 15,511.72 and 6,765.38

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Solution

The fourth proportional to 11,239.40, 15,511.72 and 6,765.38 is: 9,337.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239.40 : 15,511.72 = 6,765.38 : x
  2. Step 2: Convert to fraction form
    11,239.40/15,511.72 = 6,765.38/x
  3. Step 3: Cross multiply
    11,239.40x = 15,511.72 × 6,765.38
  4. Step 4: Simplify right side
    11,239.40x = 104,942,680.25
  5. Step 5: Solve for x
    x = 104,942,680.25/11,239.40
  6. Step 6: Final answer
    x = 9,337.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.