Home / 21,168.61-29,213.13-11,608.72

Finding the Fourth Proportional to 21,168.61, 29,213.13 and 11,608.72

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Solution

The fourth proportional to 21,168.61, 29,213.13 and 11,608.72 is: 16,020.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.61 : 29,213.13 = 11,608.72 : x
  2. Step 2: Convert to fraction form
    21,168.61/29,213.13 = 11,608.72/x
  3. Step 3: Cross multiply
    21,168.61x = 29,213.13 × 11,608.72
  4. Step 4: Simplify right side
    21,168.61x = 339,127,046.49
  5. Step 5: Solve for x
    x = 339,127,046.49/21,168.61
  6. Step 6: Final answer
    x = 16,020.28

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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.