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Finding the Fourth Proportional to 28,418.44, 42,626.10 and 8,696.98

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Solution

The fourth proportional to 28,418.44, 42,626.10 and 8,696.98 is: 13,044.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,418.44 : 42,626.10 = 8,696.98 : x
  2. Step 2: Convert to fraction form
    28,418.44/42,626.10 = 8,696.98/x
  3. Step 3: Cross multiply
    28,418.44x = 42,626.10 × 8,696.98
  4. Step 4: Simplify right side
    28,418.44x = 370,718,339.18
  5. Step 5: Solve for x
    x = 370,718,339.18/28,418.44
  6. Step 6: Final answer
    x = 13,044.99

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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.