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Finding the Fourth Proportional to 16,818.75, 23,209.88 and 9,366.75

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Solution

The fourth proportional to 16,818.75, 23,209.88 and 9,366.75 is: 12,926.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,818.75 : 23,209.88 = 9,366.75 : x
  2. Step 2: Convert to fraction form
    16,818.75/23,209.88 = 9,366.75/x
  3. Step 3: Cross multiply
    16,818.75x = 23,209.88 × 9,366.75
  4. Step 4: Simplify right side
    16,818.75x = 217,401,096.66
  5. Step 5: Solve for x
    x = 217,401,096.66/16,818.75
  6. Step 6: Final answer
    x = 12,926.12

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Double scale
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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.