Home / 21,668.97-29,902.78-12,109.05

Finding the Fourth Proportional to 21,668.97, 29,902.78 and 12,109.05

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Solution

The fourth proportional to 21,668.97, 29,902.78 and 12,109.05 is: 16,710.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,668.97 : 29,902.78 = 12,109.05 : x
  2. Step 2: Convert to fraction form
    21,668.97/29,902.78 = 12,109.05/x
  3. Step 3: Cross multiply
    21,668.97x = 29,902.78 × 12,109.05
  4. Step 4: Simplify right side
    21,668.97x = 362,094,258.16
  5. Step 5: Solve for x
    x = 362,094,258.16/21,668.97
  6. Step 6: Final answer
    x = 16,710.27

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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.