Home / 20,529.28-30,772.36-11,633.55

Finding the Fourth Proportional to 20,529.28, 30,772.36 and 11,633.55

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Solution

The fourth proportional to 20,529.28, 30,772.36 and 11,633.55 is: 17,438.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.28 : 30,772.36 = 11,633.55 : x
  2. Step 2: Convert to fraction form
    20,529.28/30,772.36 = 11,633.55/x
  3. Step 3: Cross multiply
    20,529.28x = 30,772.36 × 11,633.55
  4. Step 4: Simplify right side
    20,529.28x = 357,991,788.68
  5. Step 5: Solve for x
    x = 357,991,788.68/20,529.28
  6. Step 6: Final answer
    x = 17,438.11

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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.