Home / 20,562.58-30,856.22-8,715.72

Finding the Fourth Proportional to 20,562.58, 30,856.22 and 8,715.72

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Solution

The fourth proportional to 20,562.58, 30,856.22 and 8,715.72 is: 13,078.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.58 : 30,856.22 = 8,715.72 : x
  2. Step 2: Convert to fraction form
    20,562.58/30,856.22 = 8,715.72/x
  3. Step 3: Cross multiply
    20,562.58x = 30,856.22 × 8,715.72
  4. Step 4: Simplify right side
    20,562.58x = 268,934,173.78
  5. Step 5: Solve for x
    x = 268,934,173.78/20,562.58
  6. Step 6: Final answer
    x = 13,078.81

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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.