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Finding the Fourth Proportional to 18,850.93, 28,238.12 and 8,840.54

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Solution

The fourth proportional to 18,850.93, 28,238.12 and 8,840.54 is: 13,242.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,850.93 : 28,238.12 = 8,840.54 : x
  2. Step 2: Convert to fraction form
    18,850.93/28,238.12 = 8,840.54/x
  3. Step 3: Cross multiply
    18,850.93x = 28,238.12 × 8,840.54
  4. Step 4: Simplify right side
    18,850.93x = 249,640,288.93
  5. Step 5: Solve for x
    x = 249,640,288.93/18,850.93
  6. Step 6: Final answer
    x = 13,242.87

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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.