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Finding the Fourth Proportional to 18,710.39, 28,041.34 and 7,604.18

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Solution

The fourth proportional to 18,710.39, 28,041.34 and 7,604.18 is: 11,396.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.39 : 28,041.34 = 7,604.18 : x
  2. Step 2: Convert to fraction form
    18,710.39/28,041.34 = 7,604.18/x
  3. Step 3: Cross multiply
    18,710.39x = 28,041.34 × 7,604.18
  4. Step 4: Simplify right side
    18,710.39x = 213,231,396.80
  5. Step 5: Solve for x
    x = 213,231,396.80/18,710.39
  6. Step 6: Final answer
    x = 11,396.42

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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.