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Finding the Fourth Proportional to 13,585.54, 18,751.38 and 8,283.28

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Solution

The fourth proportional to 13,585.54, 18,751.38 and 8,283.28 is: 11,432.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.54 : 18,751.38 = 8,283.28 : x
  2. Step 2: Convert to fraction form
    13,585.54/18,751.38 = 8,283.28/x
  3. Step 3: Cross multiply
    13,585.54x = 18,751.38 × 8,283.28
  4. Step 4: Simplify right side
    13,585.54x = 155,322,930.93
  5. Step 5: Solve for x
    x = 155,322,930.93/13,585.54
  6. Step 6: Final answer
    x = 11,432.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.