Home / 20,558.32-30,825.84-6,515.68

Finding the Fourth Proportional to 20,558.32, 30,825.84 and 6,515.68

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Solution

The fourth proportional to 20,558.32, 30,825.84 and 6,515.68 is: 9,769.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.32 : 30,825.84 = 6,515.68 : x
  2. Step 2: Convert to fraction form
    20,558.32/30,825.84 = 6,515.68/x
  3. Step 3: Cross multiply
    20,558.32x = 30,825.84 × 6,515.68
  4. Step 4: Simplify right side
    20,558.32x = 200,851,309.17
  5. Step 5: Solve for x
    x = 200,851,309.17/20,558.32
  6. Step 6: Final answer
    x = 9,769.83

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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.