Home / 18,939.08-28,407.59-5,791.45

Finding the Fourth Proportional to 18,939.08, 28,407.59 and 5,791.45

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Solution

The fourth proportional to 18,939.08, 28,407.59 and 5,791.45 is: 8,686.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.08 : 28,407.59 = 5,791.45 : x
  2. Step 2: Convert to fraction form
    18,939.08/28,407.59 = 5,791.45/x
  3. Step 3: Cross multiply
    18,939.08x = 28,407.59 × 5,791.45
  4. Step 4: Simplify right side
    18,939.08x = 164,521,132.47
  5. Step 5: Solve for x
    x = 164,521,132.47/18,939.08
  6. Step 6: Final answer
    x = 8,686.86

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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.