Home / 20,467.28-30,715.50-8,783.84

Finding the Fourth Proportional to 20,467.28, 30,715.50 and 8,783.84

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Solution

The fourth proportional to 20,467.28, 30,715.50 and 8,783.84 is: 13,182.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,467.28 : 30,715.50 = 8,783.84 : x
  2. Step 2: Convert to fraction form
    20,467.28/30,715.50 = 8,783.84/x
  3. Step 3: Cross multiply
    20,467.28x = 30,715.50 × 8,783.84
  4. Step 4: Simplify right side
    20,467.28x = 269,800,037.52
  5. Step 5: Solve for x
    x = 269,800,037.52/20,467.28
  6. Step 6: Final answer
    x = 13,182.02

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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.