Home / 18,979.53-28,486.57-10,102.31

Finding the Fourth Proportional to 18,979.53, 28,486.57 and 10,102.31

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Solution

The fourth proportional to 18,979.53, 28,486.57 and 10,102.31 is: 15,162.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.53 : 28,486.57 = 10,102.31 : x
  2. Step 2: Convert to fraction form
    18,979.53/28,486.57 = 10,102.31/x
  3. Step 3: Cross multiply
    18,979.53x = 28,486.57 × 10,102.31
  4. Step 4: Simplify right side
    18,979.53x = 287,780,160.98
  5. Step 5: Solve for x
    x = 287,780,160.98/18,979.53
  6. Step 6: Final answer
    x = 15,162.66

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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.