Home / 18,868.78-28,304.13-4,828.92

Finding the Fourth Proportional to 18,868.78, 28,304.13 and 4,828.92

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Solution

The fourth proportional to 18,868.78, 28,304.13 and 4,828.92 is: 7,243.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.78 : 28,304.13 = 4,828.92 : x
  2. Step 2: Convert to fraction form
    18,868.78/28,304.13 = 4,828.92/x
  3. Step 3: Cross multiply
    18,868.78x = 28,304.13 × 4,828.92
  4. Step 4: Simplify right side
    18,868.78x = 136,678,530.22
  5. Step 5: Solve for x
    x = 136,678,530.22/18,868.78
  6. Step 6: Final answer
    x = 7,243.63

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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.