Home / 21,144.35-29,180.16-11,712.91

Finding the Fourth Proportional to 21,144.35, 29,180.16 and 11,712.91

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Solution

The fourth proportional to 21,144.35, 29,180.16 and 11,712.91 is: 16,164.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.35 : 29,180.16 = 11,712.91 : x
  2. Step 2: Convert to fraction form
    21,144.35/29,180.16 = 11,712.91/x
  3. Step 3: Cross multiply
    21,144.35x = 29,180.16 × 11,712.91
  4. Step 4: Simplify right side
    21,144.35x = 341,784,587.87
  5. Step 5: Solve for x
    x = 341,784,587.87/21,144.35
  6. Step 6: Final answer
    x = 16,164.35

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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.