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Finding the Fourth Proportional to 11,123.53, 15,346.06 and 6,645.65

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Solution

The fourth proportional to 11,123.53, 15,346.06 and 6,645.65 is: 9,168.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123.53 : 15,346.06 = 6,645.65 : x
  2. Step 2: Convert to fraction form
    11,123.53/15,346.06 = 6,645.65/x
  3. Step 3: Cross multiply
    11,123.53x = 15,346.06 × 6,645.65
  4. Step 4: Simplify right side
    11,123.53x = 101,984,450.29
  5. Step 5: Solve for x
    x = 101,984,450.29/11,123.53
  6. Step 6: Final answer
    x = 9,168.36

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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.