Home / 13,381.80-20,073.84-3,521.13

Finding the Fourth Proportional to 13,381.80, 20,073.84 and 3,521.13

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Solution

The fourth proportional to 13,381.80, 20,073.84 and 3,521.13 is: 5,281.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.80 : 20,073.84 = 3,521.13 : x
  2. Step 2: Convert to fraction form
    13,381.80/20,073.84 = 3,521.13/x
  3. Step 3: Cross multiply
    13,381.80x = 20,073.84 × 3,521.13
  4. Step 4: Simplify right side
    13,381.80x = 70,682,499.87
  5. Step 5: Solve for x
    x = 70,682,499.87/13,381.80
  6. Step 6: Final answer
    x = 5,281.99

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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.