Home / 18,910.91-28,348.73-6,422.39

Finding the Fourth Proportional to 18,910.91, 28,348.73 and 6,422.39

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Solution

The fourth proportional to 18,910.91, 28,348.73 and 6,422.39 is: 9,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.91 : 28,348.73 = 6,422.39 : x
  2. Step 2: Convert to fraction form
    18,910.91/28,348.73 = 6,422.39/x
  3. Step 3: Cross multiply
    18,910.91x = 28,348.73 × 6,422.39
  4. Step 4: Simplify right side
    18,910.91x = 182,066,600.06
  5. Step 5: Solve for x
    x = 182,066,600.06/18,910.91
  6. Step 6: Final answer
    x = 9,627.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.