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Finding the Fourth Proportional to 18,843.57, 28,265.33 and 7,156.77

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Solution

The fourth proportional to 18,843.57, 28,265.33 and 7,156.77 is: 10,735.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843.57 : 28,265.33 = 7,156.77 : x
  2. Step 2: Convert to fraction form
    18,843.57/28,265.33 = 7,156.77/x
  3. Step 3: Cross multiply
    18,843.57x = 28,265.33 × 7,156.77
  4. Step 4: Simplify right side
    18,843.57x = 202,288,430.00
  5. Step 5: Solve for x
    x = 202,288,430.00/18,843.57
  6. Step 6: Final answer
    x = 10,735.14

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1.5x scale

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.