Home / 18,758.39-28,106.44-13,200.11

Finding the Fourth Proportional to 18,758.39, 28,106.44 and 13,200.11

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Solution

The fourth proportional to 18,758.39, 28,106.44 and 13,200.11 is: 19,778.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.39 : 28,106.44 = 13,200.11 : x
  2. Step 2: Convert to fraction form
    18,758.39/28,106.44 = 13,200.11/x
  3. Step 3: Cross multiply
    18,758.39x = 28,106.44 × 13,200.11
  4. Step 4: Simplify right side
    18,758.39x = 371,007,926.18
  5. Step 5: Solve for x
    x = 371,007,926.18/18,758.39
  6. Step 6: Final answer
    x = 19,778.24

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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.