Home / 13,206.98-18,226.79-7,239.80

Finding the Fourth Proportional to 13,206.98, 18,226.79 and 7,239.80

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Solution

The fourth proportional to 13,206.98, 18,226.79 and 7,239.80 is: 9,991.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206.98 : 18,226.79 = 7,239.80 : x
  2. Step 2: Convert to fraction form
    13,206.98/18,226.79 = 7,239.80/x
  3. Step 3: Cross multiply
    13,206.98x = 18,226.79 × 7,239.80
  4. Step 4: Simplify right side
    13,206.98x = 131,958,248.23
  5. Step 5: Solve for x
    x = 131,958,248.23/13,206.98
  6. Step 6: Final answer
    x = 9,991.55

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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.