Home / 12,780.27-19,198.35-9,106.11

Finding the Fourth Proportional to 12,780.27, 19,198.35 and 9,106.11

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Solution

The fourth proportional to 12,780.27, 19,198.35 and 9,106.11 is: 13,679.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.27 : 19,198.35 = 9,106.11 : x
  2. Step 2: Convert to fraction form
    12,780.27/19,198.35 = 9,106.11/x
  3. Step 3: Cross multiply
    12,780.27x = 19,198.35 × 9,106.11
  4. Step 4: Simplify right side
    12,780.27x = 174,822,286.92
  5. Step 5: Solve for x
    x = 174,822,286.92/12,780.27
  6. Step 6: Final answer
    x = 13,679.08

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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.