Home / 13,478.02-20,217.78-4,119.46

Finding the Fourth Proportional to 13,478.02, 20,217.78 and 4,119.46

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Solution

The fourth proportional to 13,478.02, 20,217.78 and 4,119.46 is: 6,179.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.02 : 20,217.78 = 4,119.46 : x
  2. Step 2: Convert to fraction form
    13,478.02/20,217.78 = 4,119.46/x
  3. Step 3: Cross multiply
    13,478.02x = 20,217.78 × 4,119.46
  4. Step 4: Simplify right side
    13,478.02x = 83,286,336.00
  5. Step 5: Solve for x
    x = 83,286,336.00/13,478.02
  6. Step 6: Final answer
    x = 6,179.42

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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.