Home / 13,155.20-19,747.20-8,230.40

Finding the Fourth Proportional to 13,155.20, 19,747.20 and 8,230.40

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Solution

The fourth proportional to 13,155.20, 19,747.20 and 8,230.40 is: 12,354.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.20 : 19,747.20 = 8,230.40 : x
  2. Step 2: Convert to fraction form
    13,155.20/19,747.20 = 8,230.40/x
  3. Step 3: Cross multiply
    13,155.20x = 19,747.20 × 8,230.40
  4. Step 4: Simplify right side
    13,155.20x = 162,527,354.88
  5. Step 5: Solve for x
    x = 162,527,354.88/13,155.20
  6. Step 6: Final answer
    x = 12,354.61

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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.