Home / 13,611.04-20,372.80-7,028.24

Finding the Fourth Proportional to 13,611.04, 20,372.80 and 7,028.24

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Solution

The fourth proportional to 13,611.04, 20,372.80 and 7,028.24 is: 10,519.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.04 : 20,372.80 = 7,028.24 : x
  2. Step 2: Convert to fraction form
    13,611.04/20,372.80 = 7,028.24/x
  3. Step 3: Cross multiply
    13,611.04x = 20,372.80 × 7,028.24
  4. Step 4: Simplify right side
    13,611.04x = 143,184,927.87
  5. Step 5: Solve for x
    x = 143,184,927.87/13,611.04
  6. Step 6: Final answer
    x = 10,519.76

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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.