Home / 11,802.21-16,292.15-8,439.18

Finding the Fourth Proportional to 11,802.21, 16,292.15 and 8,439.18

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Solution

The fourth proportional to 11,802.21, 16,292.15 and 8,439.18 is: 11,649.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,802.21 : 16,292.15 = 8,439.18 : x
  2. Step 2: Convert to fraction form
    11,802.21/16,292.15 = 8,439.18/x
  3. Step 3: Cross multiply
    11,802.21x = 16,292.15 × 8,439.18
  4. Step 4: Simplify right side
    11,802.21x = 137,492,262.78
  5. Step 5: Solve for x
    x = 137,492,262.78/11,802.21
  6. Step 6: Final answer
    x = 11,649.71

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Double scale
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Similar ratio
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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.