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Finding the Fourth Proportional to 18,813.46, 28,220.19 and 6,332.44

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Solution

The fourth proportional to 18,813.46, 28,220.19 and 6,332.44 is: 9,498.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,813.46 : 28,220.19 = 6,332.44 : x
  2. Step 2: Convert to fraction form
    18,813.46/28,220.19 = 6,332.44/x
  3. Step 3: Cross multiply
    18,813.46x = 28,220.19 × 6,332.44
  4. Step 4: Simplify right side
    18,813.46x = 178,702,718.99
  5. Step 5: Solve for x
    x = 178,702,718.99/18,813.46
  6. Step 6: Final answer
    x = 9,498.66

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Similar ratio
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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.