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Finding the Fourth Proportional to 18,886.38, 28,329.39 and 5,035.38

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Solution

The fourth proportional to 18,886.38, 28,329.39 and 5,035.38 is: 7,553.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.38 : 28,329.39 = 5,035.38 : x
  2. Step 2: Convert to fraction form
    18,886.38/28,329.39 = 5,035.38/x
  3. Step 3: Cross multiply
    18,886.38x = 28,329.39 × 5,035.38
  4. Step 4: Simplify right side
    18,886.38x = 142,649,243.82
  5. Step 5: Solve for x
    x = 142,649,243.82/18,886.38
  6. Step 6: Final answer
    x = 7,553.02

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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.