Home / 11,209.18-15,473.80-7,981.09

Finding the Fourth Proportional to 11,209.18, 15,473.80 and 7,981.09

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Solution

The fourth proportional to 11,209.18, 15,473.80 and 7,981.09 is: 11,017.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.18 : 15,473.80 = 7,981.09 : x
  2. Step 2: Convert to fraction form
    11,209.18/15,473.80 = 7,981.09/x
  3. Step 3: Cross multiply
    11,209.18x = 15,473.80 × 7,981.09
  4. Step 4: Simplify right side
    11,209.18x = 123,497,790.44
  5. Step 5: Solve for x
    x = 123,497,790.44/11,209.18
  6. Step 6: Final answer
    x = 11,017.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.