Home / 18,990.11-26,201.88-11,027.61

Finding the Fourth Proportional to 18,990.11, 26,201.88 and 11,027.61

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Solution

The fourth proportional to 18,990.11, 26,201.88 and 11,027.61 is: 15,215.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.11 : 26,201.88 = 11,027.61 : x
  2. Step 2: Convert to fraction form
    18,990.11/26,201.88 = 11,027.61/x
  3. Step 3: Cross multiply
    18,990.11x = 26,201.88 × 11,027.61
  4. Step 4: Simplify right side
    18,990.11x = 288,944,113.91
  5. Step 5: Solve for x
    x = 288,944,113.91/18,990.11
  6. Step 6: Final answer
    x = 15,215.50

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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.