Home / 18,963.89-28,418.73-13,926.76

Finding the Fourth Proportional to 18,963.89, 28,418.73 and 13,926.76

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Solution

The fourth proportional to 18,963.89, 28,418.73 and 13,926.76 is: 20,870.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,963.89 : 28,418.73 = 13,926.76 : x
  2. Step 2: Convert to fraction form
    18,963.89/28,418.73 = 13,926.76/x
  3. Step 3: Cross multiply
    18,963.89x = 28,418.73 × 13,926.76
  4. Step 4: Simplify right side
    18,963.89x = 395,780,761.17
  5. Step 5: Solve for x
    x = 395,780,761.17/18,963.89
  6. Step 6: Final answer
    x = 20,870.23

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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.