Home / 13,221.54-18,246.12-7,253.55

Finding the Fourth Proportional to 13,221.54, 18,246.12 and 7,253.55

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Solution

The fourth proportional to 13,221.54, 18,246.12 and 7,253.55 is: 10,010.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.54 : 18,246.12 = 7,253.55 : x
  2. Step 2: Convert to fraction form
    13,221.54/18,246.12 = 7,253.55/x
  3. Step 3: Cross multiply
    13,221.54x = 18,246.12 × 7,253.55
  4. Step 4: Simplify right side
    13,221.54x = 132,349,143.73
  5. Step 5: Solve for x
    x = 132,349,143.73/13,221.54
  6. Step 6: Final answer
    x = 10,010.12

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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.