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Finding the Fourth Proportional to 18,689.50, 28,034.25 and 7,602.22

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Solution

The fourth proportional to 18,689.50, 28,034.25 and 7,602.22 is: 11,403.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.50 : 28,034.25 = 7,602.22 : x
  2. Step 2: Convert to fraction form
    18,689.50/28,034.25 = 7,602.22/x
  3. Step 3: Cross multiply
    18,689.50x = 28,034.25 × 7,602.22
  4. Step 4: Simplify right side
    18,689.50x = 213,122,536.04
  5. Step 5: Solve for x
    x = 213,122,536.04/18,689.50
  6. Step 6: Final answer
    x = 11,403.33

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Double scale
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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.