Home / 21,164.22-29,204.10-12,209.94

Finding the Fourth Proportional to 21,164.22, 29,204.10 and 12,209.94

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Solution

The fourth proportional to 21,164.22, 29,204.10 and 12,209.94 is: 16,848.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,164.22 : 29,204.10 = 12,209.94 : x
  2. Step 2: Convert to fraction form
    21,164.22/29,204.10 = 12,209.94/x
  3. Step 3: Cross multiply
    21,164.22x = 29,204.10 × 12,209.94
  4. Step 4: Simplify right side
    21,164.22x = 356,580,308.75
  5. Step 5: Solve for x
    x = 356,580,308.75/21,164.22
  6. Step 6: Final answer
    x = 16,848.26

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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.