Home / 18,747.24-28,120.16-4,707.36

Finding the Fourth Proportional to 18,747.24, 28,120.16 and 4,707.36

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Solution

The fourth proportional to 18,747.24, 28,120.16 and 4,707.36 is: 7,060.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.24 : 28,120.16 = 4,707.36 : x
  2. Step 2: Convert to fraction form
    18,747.24/28,120.16 = 4,707.36/x
  3. Step 3: Cross multiply
    18,747.24x = 28,120.16 × 4,707.36
  4. Step 4: Simplify right side
    18,747.24x = 132,371,716.38
  5. Step 5: Solve for x
    x = 132,371,716.38/18,747.24
  6. Step 6: Final answer
    x = 7,060.86

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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.