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Finding the Fourth Proportional to 18,793.10, 28,153.20 and 10,458.20

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Solution

The fourth proportional to 18,793.10, 28,153.20 and 10,458.20 is: 15,667.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.10 : 28,153.20 = 10,458.20 : x
  2. Step 2: Convert to fraction form
    18,793.10/28,153.20 = 10,458.20/x
  3. Step 3: Cross multiply
    18,793.10x = 28,153.20 × 10,458.20
  4. Step 4: Simplify right side
    18,793.10x = 294,431,796.24
  5. Step 5: Solve for x
    x = 294,431,796.24/18,793.10
  6. Step 6: Final answer
    x = 15,667.02

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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.