Home / 13,185.05-18,195.33-7,442.13

Finding the Fourth Proportional to 13,185.05, 18,195.33 and 7,442.13

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Solution

The fourth proportional to 13,185.05, 18,195.33 and 7,442.13 is: 10,270.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.05 : 18,195.33 = 7,442.13 : x
  2. Step 2: Convert to fraction form
    13,185.05/18,195.33 = 7,442.13/x
  3. Step 3: Cross multiply
    13,185.05x = 18,195.33 × 7,442.13
  4. Step 4: Simplify right side
    13,185.05x = 135,412,011.25
  5. Step 5: Solve for x
    x = 135,412,011.25/13,185.05
  6. Step 6: Final answer
    x = 10,270.12

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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.