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Finding the Fourth Proportional to 18,850.90, 28,277.28 and 7,165.02

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Solution

The fourth proportional to 18,850.90, 28,277.28 and 7,165.02 is: 10,747.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,850.90 : 28,277.28 = 7,165.02 : x
  2. Step 2: Convert to fraction form
    18,850.90/28,277.28 = 7,165.02/x
  3. Step 3: Cross multiply
    18,850.90x = 28,277.28 × 7,165.02
  4. Step 4: Simplify right side
    18,850.90x = 202,607,276.75
  5. Step 5: Solve for x
    x = 202,607,276.75/18,850.90
  6. Step 6: Final answer
    x = 10,747.88

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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.