Home / 13,134.78-18,125.73-7,166.43

Finding the Fourth Proportional to 13,134.78, 18,125.73 and 7,166.43

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Solution

The fourth proportional to 13,134.78, 18,125.73 and 7,166.43 is: 9,889.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.78 : 18,125.73 = 7,166.43 : x
  2. Step 2: Convert to fraction form
    13,134.78/18,125.73 = 7,166.43/x
  3. Step 3: Cross multiply
    13,134.78x = 18,125.73 × 7,166.43
  4. Step 4: Simplify right side
    13,134.78x = 129,896,775.24
  5. Step 5: Solve for x
    x = 129,896,775.24/13,134.78
  6. Step 6: Final answer
    x = 9,889.53

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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.