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Finding the Fourth Proportional to 12,928.16, 17,847.67 and 8,701.44

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Solution

The fourth proportional to 12,928.16, 17,847.67 and 8,701.44 is: 12,012.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.16 : 17,847.67 = 8,701.44 : x
  2. Step 2: Convert to fraction form
    12,928.16/17,847.67 = 8,701.44/x
  3. Step 3: Cross multiply
    12,928.16x = 17,847.67 × 8,701.44
  4. Step 4: Simplify right side
    12,928.16x = 155,300,429.64
  5. Step 5: Solve for x
    x = 155,300,429.64/12,928.16
  6. Step 6: Final answer
    x = 12,012.57

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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.