Home / 11,422.39-15,764.85-6,645.11

Finding the Fourth Proportional to 11,422.39, 15,764.85 and 6,645.11

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Solution

The fourth proportional to 11,422.39, 15,764.85 and 6,645.11 is: 9,171.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,422.39 : 15,764.85 = 6,645.11 : x
  2. Step 2: Convert to fraction form
    11,422.39/15,764.85 = 6,645.11/x
  3. Step 3: Cross multiply
    11,422.39x = 15,764.85 × 6,645.11
  4. Step 4: Simplify right side
    11,422.39x = 104,759,162.38
  5. Step 5: Solve for x
    x = 104,759,162.38/11,422.39
  6. Step 6: Final answer
    x = 9,171.39

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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.