Home / 13,991.23-20,986.92-5,226.07

Finding the Fourth Proportional to 13,991.23, 20,986.92 and 5,226.07

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Solution

The fourth proportional to 13,991.23, 20,986.92 and 5,226.07 is: 7,839.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.23 : 20,986.92 = 5,226.07 : x
  2. Step 2: Convert to fraction form
    13,991.23/20,986.92 = 5,226.07/x
  3. Step 3: Cross multiply
    13,991.23x = 20,986.92 × 5,226.07
  4. Step 4: Simplify right side
    13,991.23x = 109,679,113.00
  5. Step 5: Solve for x
    x = 109,679,113.00/13,991.23
  6. Step 6: Final answer
    x = 7,839.13

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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.