Home / 8,429.28-12,622.36-8,179.85

Finding the Fourth Proportional to 8,429.28, 12,622.36 and 8,179.85

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Solution

The fourth proportional to 8,429.28, 12,622.36 and 8,179.85 is: 12,248.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.28 : 12,622.36 = 8,179.85 : x
  2. Step 2: Convert to fraction form
    8,429.28/12,622.36 = 8,179.85/x
  3. Step 3: Cross multiply
    8,429.28x = 12,622.36 × 8,179.85
  4. Step 4: Simplify right side
    8,429.28x = 103,248,964.11
  5. Step 5: Solve for x
    x = 103,248,964.11/8,429.28
  6. Step 6: Final answer
    x = 12,248.85

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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.