Home / 10,069.44-15,120.90-8,439.72

Finding the Fourth Proportional to 10,069.44, 15,120.90 and 8,439.72

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Solution

The fourth proportional to 10,069.44, 15,120.90 and 8,439.72 is: 12,673.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,069.44 : 15,120.90 = 8,439.72 : x
  2. Step 2: Convert to fraction form
    10,069.44/15,120.90 = 8,439.72/x
  3. Step 3: Cross multiply
    10,069.44x = 15,120.90 × 8,439.72
  4. Step 4: Simplify right side
    10,069.44x = 127,616,162.15
  5. Step 5: Solve for x
    x = 127,616,162.15/10,069.44
  6. Step 6: Final answer
    x = 12,673.61

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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.