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Finding the Fourth Proportional to 12,693.39, 19,018.42 and 8,989.46

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Solution

The fourth proportional to 12,693.39, 19,018.42 and 8,989.46 is: 13,468.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,693.39 : 19,018.42 = 8,989.46 : x
  2. Step 2: Convert to fraction form
    12,693.39/19,018.42 = 8,989.46/x
  3. Step 3: Cross multiply
    12,693.39x = 19,018.42 × 8,989.46
  4. Step 4: Simplify right side
    12,693.39x = 170,965,350.93
  5. Step 5: Solve for x
    x = 170,965,350.93/12,693.39
  6. Step 6: Final answer
    x = 13,468.85

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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.