Home / 20,511.28-30,766.94-5,720.58

Finding the Fourth Proportional to 20,511.28, 30,766.94 and 5,720.58

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Solution

The fourth proportional to 20,511.28, 30,766.94 and 5,720.58 is: 8,580.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.28 : 30,766.94 = 5,720.58 : x
  2. Step 2: Convert to fraction form
    20,511.28/30,766.94 = 5,720.58/x
  3. Step 3: Cross multiply
    20,511.28x = 30,766.94 × 5,720.58
  4. Step 4: Simplify right side
    20,511.28x = 176,004,741.63
  5. Step 5: Solve for x
    x = 176,004,741.63/20,511.28
  6. Step 6: Final answer
    x = 8,580.88

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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.