Home / 21,213.29-29,270.82-12,261.62

Finding the Fourth Proportional to 21,213.29, 29,270.82 and 12,261.62

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Solution

The fourth proportional to 21,213.29, 29,270.82 and 12,261.62 is: 16,919.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.29 : 29,270.82 = 12,261.62 : x
  2. Step 2: Convert to fraction form
    21,213.29/29,270.82 = 12,261.62/x
  3. Step 3: Cross multiply
    21,213.29x = 29,270.82 × 12,261.62
  4. Step 4: Simplify right side
    21,213.29x = 358,907,671.93
  5. Step 5: Solve for x
    x = 358,907,671.93/21,213.29
  6. Step 6: Final answer
    x = 16,919.00

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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.