Home / 13,611.38-20,418.35-5,292.03

Finding the Fourth Proportional to 13,611.38, 20,418.35 and 5,292.03

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Solution

The fourth proportional to 13,611.38, 20,418.35 and 5,292.03 is: 7,938.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.38 : 20,418.35 = 5,292.03 : x
  2. Step 2: Convert to fraction form
    13,611.38/20,418.35 = 5,292.03/x
  3. Step 3: Cross multiply
    13,611.38x = 20,418.35 × 5,292.03
  4. Step 4: Simplify right side
    13,611.38x = 108,054,533.98
  5. Step 5: Solve for x
    x = 108,054,533.98/13,611.38
  6. Step 6: Final answer
    x = 7,938.55

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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.