Home / 20,611.28-30,909.60-7,460.24

Finding the Fourth Proportional to 20,611.28, 30,909.60 and 7,460.24

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Solution

The fourth proportional to 20,611.28, 30,909.60 and 7,460.24 is: 11,187.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.28 : 30,909.60 = 7,460.24 : x
  2. Step 2: Convert to fraction form
    20,611.28/30,909.60 = 7,460.24/x
  3. Step 3: Cross multiply
    20,611.28x = 30,909.60 × 7,460.24
  4. Step 4: Simplify right side
    20,611.28x = 230,593,034.30
  5. Step 5: Solve for x
    x = 230,593,034.30/20,611.28
  6. Step 6: Final answer
    x = 11,187.71

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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.