Home / 13,198.25-18,209.04-7,528.89

Finding the Fourth Proportional to 13,198.25, 18,209.04 and 7,528.89

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Solution

The fourth proportional to 13,198.25, 18,209.04 and 7,528.89 is: 10,387.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.25 : 18,209.04 = 7,528.89 : x
  2. Step 2: Convert to fraction form
    13,198.25/18,209.04 = 7,528.89/x
  3. Step 3: Cross multiply
    13,198.25x = 18,209.04 × 7,528.89
  4. Step 4: Simplify right side
    13,198.25x = 137,093,859.17
  5. Step 5: Solve for x
    x = 137,093,859.17/13,198.25
  6. Step 6: Final answer
    x = 10,387.28

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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.