Home / 18,288.90-25,240.54-13,188.61

Finding the Fourth Proportional to 18,288.90, 25,240.54 and 13,188.61

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Solution

The fourth proportional to 18,288.90, 25,240.54 and 13,188.61 is: 18,201.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.90 : 25,240.54 = 13,188.61 : x
  2. Step 2: Convert to fraction form
    18,288.90/25,240.54 = 13,188.61/x
  3. Step 3: Cross multiply
    18,288.90x = 25,240.54 × 13,188.61
  4. Step 4: Simplify right side
    18,288.90x = 332,887,542.18
  5. Step 5: Solve for x
    x = 332,887,542.18/18,288.90
  6. Step 6: Final answer
    x = 18,201.62

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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.