Home / 13,205.86-19,839.75-12,458.62

Finding the Fourth Proportional to 13,205.86, 19,839.75 and 12,458.62

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Solution

The fourth proportional to 13,205.86, 19,839.75 and 12,458.62 is: 18,717.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,205.86 : 19,839.75 = 12,458.62 : x
  2. Step 2: Convert to fraction form
    13,205.86/19,839.75 = 12,458.62/x
  3. Step 3: Cross multiply
    13,205.86x = 19,839.75 × 12,458.62
  4. Step 4: Simplify right side
    13,205.86x = 247,175,906.15
  5. Step 5: Solve for x
    x = 247,175,906.15/13,205.86
  6. Step 6: Final answer
    x = 18,717.14

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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.