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Finding the Fourth Proportional to 14,612.16, 21,915 and 8,770.44

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Solution

The fourth proportional to 14,612.16, 21,915 and 8,770.44 is: 13,153.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,612.16 : 21,915 = 8,770.44 : x
  2. Step 2: Convert to fraction form
    14,612.16/21,915 = 8,770.44/x
  3. Step 3: Cross multiply
    14,612.16x = 21,915 × 8,770.44
  4. Step 4: Simplify right side
    14,612.16x = 192,204,192.60
  5. Step 5: Solve for x
    x = 192,204,192.60/14,612.16
  6. Step 6: Final answer
    x = 13,153.72

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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.