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Finding the Fourth Proportional to 18,843.75, 28,278.59 and 6,531.75

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Solution

The fourth proportional to 18,843.75, 28,278.59 and 6,531.75 is: 9,802.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843.75 : 28,278.59 = 6,531.75 : x
  2. Step 2: Convert to fraction form
    18,843.75/28,278.59 = 6,531.75/x
  3. Step 3: Cross multiply
    18,843.75x = 28,278.59 × 6,531.75
  4. Step 4: Simplify right side
    18,843.75x = 184,708,647.57
  5. Step 5: Solve for x
    x = 184,708,647.57/18,843.75
  6. Step 6: Final answer
    x = 9,802.12

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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.