Home / 13,747.37-18,971.75-8,082.50

Finding the Fourth Proportional to 13,747.37, 18,971.75 and 8,082.50

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Solution

The fourth proportional to 13,747.37, 18,971.75 and 8,082.50 is: 11,154.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.37 : 18,971.75 = 8,082.50 : x
  2. Step 2: Convert to fraction form
    13,747.37/18,971.75 = 8,082.50/x
  3. Step 3: Cross multiply
    13,747.37x = 18,971.75 × 8,082.50
  4. Step 4: Simplify right side
    13,747.37x = 153,339,094.72
  5. Step 5: Solve for x
    x = 153,339,094.72/13,747.37
  6. Step 6: Final answer
    x = 11,154.07

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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.