Home / 21,160.69-29,202.70-12,086.84

Finding the Fourth Proportional to 21,160.69, 29,202.70 and 12,086.84

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Solution

The fourth proportional to 21,160.69, 29,202.70 and 12,086.84 is: 16,680.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.69 : 29,202.70 = 12,086.84 : x
  2. Step 2: Convert to fraction form
    21,160.69/29,202.70 = 12,086.84/x
  3. Step 3: Cross multiply
    21,160.69x = 29,202.70 × 12,086.84
  4. Step 4: Simplify right side
    21,160.69x = 352,968,362.47
  5. Step 5: Solve for x
    x = 352,968,362.47/21,160.69
  6. Step 6: Final answer
    x = 16,680.38

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Double scale
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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.