Home / 13,198.80-18,214.40-7,230.52

Finding the Fourth Proportional to 13,198.80, 18,214.40 and 7,230.52

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Solution

The fourth proportional to 13,198.80, 18,214.40 and 7,230.52 is: 9,978.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.80 : 18,214.40 = 7,230.52 : x
  2. Step 2: Convert to fraction form
    13,198.80/18,214.40 = 7,230.52/x
  3. Step 3: Cross multiply
    13,198.80x = 18,214.40 × 7,230.52
  4. Step 4: Simplify right side
    13,198.80x = 131,699,583.49
  5. Step 5: Solve for x
    x = 131,699,583.49/13,198.80
  6. Step 6: Final answer
    x = 9,978.15

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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.