Home / 11,122.13-15,349.59-6,645.79

Finding the Fourth Proportional to 11,122.13, 15,349.59 and 6,645.79

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Solution

The fourth proportional to 11,122.13, 15,349.59 and 6,645.79 is: 9,171.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.13 : 15,349.59 = 6,645.79 : x
  2. Step 2: Convert to fraction form
    11,122.13/15,349.59 = 6,645.79/x
  3. Step 3: Cross multiply
    11,122.13x = 15,349.59 × 6,645.79
  4. Step 4: Simplify right side
    11,122.13x = 102,010,168.34
  5. Step 5: Solve for x
    x = 102,010,168.34/11,122.13
  6. Step 6: Final answer
    x = 9,171.82

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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.