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Finding the Fourth Proportional to 17,280.48, 25,928.04 and 8,515.44

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Solution

The fourth proportional to 17,280.48, 25,928.04 and 8,515.44 is: 12,776.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,280.48 : 25,928.04 = 8,515.44 : x
  2. Step 2: Convert to fraction form
    17,280.48/25,928.04 = 8,515.44/x
  3. Step 3: Cross multiply
    17,280.48x = 25,928.04 × 8,515.44
  4. Step 4: Simplify right side
    17,280.48x = 220,788,668.94
  5. Step 5: Solve for x
    x = 220,788,668.94/17,280.48
  6. Step 6: Final answer
    x = 12,776.77

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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.