Home / 20,770.08-31,132.44-7,611.36

Finding the Fourth Proportional to 20,770.08, 31,132.44 and 7,611.36

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Solution

The fourth proportional to 20,770.08, 31,132.44 and 7,611.36 is: 11,408.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.08 : 31,132.44 = 7,611.36 : x
  2. Step 2: Convert to fraction form
    20,770.08/31,132.44 = 7,611.36/x
  3. Step 3: Cross multiply
    20,770.08x = 31,132.44 × 7,611.36
  4. Step 4: Simplify right side
    20,770.08x = 236,960,208.52
  5. Step 5: Solve for x
    x = 236,960,208.52/20,770.08
  6. Step 6: Final answer
    x = 11,408.73

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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.