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Finding the Fourth Proportional to 12,806.80, 19,212.12 and 4,041.59

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Solution

The fourth proportional to 12,806.80, 19,212.12 and 4,041.59 is: 6,062.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,806.80 : 19,212.12 = 4,041.59 : x
  2. Step 2: Convert to fraction form
    12,806.80/19,212.12 = 4,041.59/x
  3. Step 3: Cross multiply
    12,806.80x = 19,212.12 × 4,041.59
  4. Step 4: Simplify right side
    12,806.80x = 77,647,416.01
  5. Step 5: Solve for x
    x = 77,647,416.01/12,806.80
  6. Step 6: Final answer
    x = 6,062.98

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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.