Home / 22,161.82-30,580.29-12,730.38

Finding the Fourth Proportional to 22,161.82, 30,580.29 and 12,730.38

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Solution

The fourth proportional to 22,161.82, 30,580.29 and 12,730.38 is: 17,566.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,161.82 : 30,580.29 = 12,730.38 : x
  2. Step 2: Convert to fraction form
    22,161.82/30,580.29 = 12,730.38/x
  3. Step 3: Cross multiply
    22,161.82x = 30,580.29 × 12,730.38
  4. Step 4: Simplify right side
    22,161.82x = 389,298,725.01
  5. Step 5: Solve for x
    x = 389,298,725.01/22,161.82
  6. Step 6: Final answer
    x = 17,566.19

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Half scale
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Double scale
Find fourth proportional to 22,162.82, 30,581.66 and 12,731.38
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.