Home / 19,122.80-28,667.18-7,433.28

Finding the Fourth Proportional to 19,122.80, 28,667.18 and 7,433.28

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Solution

The fourth proportional to 19,122.80, 28,667.18 and 7,433.28 is: 11,143.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,122.80 : 28,667.18 = 7,433.28 : x
  2. Step 2: Convert to fraction form
    19,122.80/28,667.18 = 7,433.28/x
  3. Step 3: Cross multiply
    19,122.80x = 28,667.18 × 7,433.28
  4. Step 4: Simplify right side
    19,122.80x = 213,091,194.33
  5. Step 5: Solve for x
    x = 213,091,194.33/19,122.80
  6. Step 6: Final answer
    x = 11,143.31

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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.