Home / 18,963.60-28,422.33-13,418.54

Finding the Fourth Proportional to 18,963.60, 28,422.33 and 13,418.54

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Solution

The fourth proportional to 18,963.60, 28,422.33 and 13,418.54 is: 20,111.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,963.60 : 28,422.33 = 13,418.54 : x
  2. Step 2: Convert to fraction form
    18,963.60/28,422.33 = 13,418.54/x
  3. Step 3: Cross multiply
    18,963.60x = 28,422.33 × 13,418.54
  4. Step 4: Simplify right side
    18,963.60x = 381,386,172.00
  5. Step 5: Solve for x
    x = 381,386,172.00/18,963.60
  6. Step 6: Final answer
    x = 20,111.49

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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.