Home / 21,149.16-29,188.43-12,196.66

Finding the Fourth Proportional to 21,149.16, 29,188.43 and 12,196.66

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Solution

The fourth proportional to 21,149.16, 29,188.43 and 12,196.66 is: 16,832.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.16 : 29,188.43 = 12,196.66 : x
  2. Step 2: Convert to fraction form
    21,149.16/29,188.43 = 12,196.66/x
  3. Step 3: Cross multiply
    21,149.16x = 29,188.43 × 12,196.66
  4. Step 4: Simplify right side
    21,149.16x = 356,001,149.72
  5. Step 5: Solve for x
    x = 356,001,149.72/21,149.16
  6. Step 6: Final answer
    x = 16,832.88

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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.