Home / 19,122.30-28,679.13-7,271.87

Finding the Fourth Proportional to 19,122.30, 28,679.13 and 7,271.87

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Solution

The fourth proportional to 19,122.30, 28,679.13 and 7,271.87 is: 10,906.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,122.30 : 28,679.13 = 7,271.87 : x
  2. Step 2: Convert to fraction form
    19,122.30/28,679.13 = 7,271.87/x
  3. Step 3: Cross multiply
    19,122.30x = 28,679.13 × 7,271.87
  4. Step 4: Simplify right side
    19,122.30x = 208,550,761.68
  5. Step 5: Solve for x
    x = 208,550,761.68/19,122.30
  6. Step 6: Final answer
    x = 10,906.15

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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.