Home / 9,105.21-12,550.14-6,119.55

Finding the Fourth Proportional to 9,105.21, 12,550.14 and 6,119.55

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Solution

The fourth proportional to 9,105.21, 12,550.14 and 6,119.55 is: 8,434.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,105.21 : 12,550.14 = 6,119.55 : x
  2. Step 2: Convert to fraction form
    9,105.21/12,550.14 = 6,119.55/x
  3. Step 3: Cross multiply
    9,105.21x = 12,550.14 × 6,119.55
  4. Step 4: Simplify right side
    9,105.21x = 76,801,209.24
  5. Step 5: Solve for x
    x = 76,801,209.24/9,105.21
  6. Step 6: Final answer
    x = 8,434.86

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Half scale
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Double scale
Find fourth proportional to 9,106.21, 12,551.52 and 6,120.55
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.