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Finding the Fourth Proportional to 14,019.84, 20,992.32 and 12,359.04

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Solution

The fourth proportional to 14,019.84, 20,992.32 and 12,359.04 is: 18,505.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,019.84 : 20,992.32 = 12,359.04 : x
  2. Step 2: Convert to fraction form
    14,019.84/20,992.32 = 12,359.04/x
  3. Step 3: Cross multiply
    14,019.84x = 20,992.32 × 12,359.04
  4. Step 4: Simplify right side
    14,019.84x = 259,444,922.57
  5. Step 5: Solve for x
    x = 259,444,922.57/14,019.84
  6. Step 6: Final answer
    x = 18,505.56

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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.