Home / 21,199.83-29,254.62-11,767.78

Finding the Fourth Proportional to 21,199.83, 29,254.62 and 11,767.78

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Solution

The fourth proportional to 21,199.83, 29,254.62 and 11,767.78 is: 16,238.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199.83 : 29,254.62 = 11,767.78 : x
  2. Step 2: Convert to fraction form
    21,199.83/29,254.62 = 11,767.78/x
  3. Step 3: Cross multiply
    21,199.83x = 29,254.62 × 11,767.78
  4. Step 4: Simplify right side
    21,199.83x = 344,261,946.65
  5. Step 5: Solve for x
    x = 344,261,946.65/21,199.83
  6. Step 6: Final answer
    x = 16,238.90

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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.