Home / 18,914.72-28,293.06-13,291.98

Finding the Fourth Proportional to 18,914.72, 28,293.06 and 13,291.98

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Solution

The fourth proportional to 18,914.72, 28,293.06 and 13,291.98 is: 19,882.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.72 : 28,293.06 = 13,291.98 : x
  2. Step 2: Convert to fraction form
    18,914.72/28,293.06 = 13,291.98/x
  3. Step 3: Cross multiply
    18,914.72x = 28,293.06 × 13,291.98
  4. Step 4: Simplify right side
    18,914.72x = 376,070,787.66
  5. Step 5: Solve for x
    x = 376,070,787.66/18,914.72
  6. Step 6: Final answer
    x = 19,882.45

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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.