Home / 13,977.74-20,969.04-8,132.78

Finding the Fourth Proportional to 13,977.74, 20,969.04 and 8,132.78

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Solution

The fourth proportional to 13,977.74, 20,969.04 and 8,132.78 is: 12,200.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.74 : 20,969.04 = 8,132.78 : x
  2. Step 2: Convert to fraction form
    13,977.74/20,969.04 = 8,132.78/x
  3. Step 3: Cross multiply
    13,977.74x = 20,969.04 × 8,132.78
  4. Step 4: Simplify right side
    13,977.74x = 170,536,589.13
  5. Step 5: Solve for x
    x = 170,536,589.13/13,977.74
  6. Step 6: Final answer
    x = 12,200.58

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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.