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Finding the Fourth Proportional to 18,682.20, 28,023.30 and 9,934.20

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Solution

The fourth proportional to 18,682.20, 28,023.30 and 9,934.20 is: 14,901.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.20 : 28,023.30 = 9,934.20 : x
  2. Step 2: Convert to fraction form
    18,682.20/28,023.30 = 9,934.20/x
  3. Step 3: Cross multiply
    18,682.20x = 28,023.30 × 9,934.20
  4. Step 4: Simplify right side
    18,682.20x = 278,389,066.86
  5. Step 5: Solve for x
    x = 278,389,066.86/18,682.20
  6. Step 6: Final answer
    x = 14,901.30

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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.