Home / 22,186.69-30,617.40-12,115.10

Finding the Fourth Proportional to 22,186.69, 30,617.40 and 12,115.10

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Solution

The fourth proportional to 22,186.69, 30,617.40 and 12,115.10 is: 16,718.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,186.69 : 30,617.40 = 12,115.10 : x
  2. Step 2: Convert to fraction form
    22,186.69/30,617.40 = 12,115.10/x
  3. Step 3: Cross multiply
    22,186.69x = 30,617.40 × 12,115.10
  4. Step 4: Simplify right side
    22,186.69x = 370,932,862.74
  5. Step 5: Solve for x
    x = 370,932,862.74/22,186.69
  6. Step 6: Final answer
    x = 16,718.71

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Half scale
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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.