Home / 13,237.62-18,270.54-7,861.38

Finding the Fourth Proportional to 13,237.62, 18,270.54 and 7,861.38

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Solution

The fourth proportional to 13,237.62, 18,270.54 and 7,861.38 is: 10,850.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,237.62 : 18,270.54 = 7,861.38 : x
  2. Step 2: Convert to fraction form
    13,237.62/18,270.54 = 7,861.38/x
  3. Step 3: Cross multiply
    13,237.62x = 18,270.54 × 7,861.38
  4. Step 4: Simplify right side
    13,237.62x = 143,631,657.75
  5. Step 5: Solve for x
    x = 143,631,657.75/13,237.62
  6. Step 6: Final answer
    x = 10,850.26

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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.