Home / 21,553.49-29,743.53-12,122.05

Finding the Fourth Proportional to 21,553.49, 29,743.53 and 12,122.05

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Solution

The fourth proportional to 21,553.49, 29,743.53 and 12,122.05 is: 16,728.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.49 : 29,743.53 = 12,122.05 : x
  2. Step 2: Convert to fraction form
    21,553.49/29,743.53 = 12,122.05/x
  3. Step 3: Cross multiply
    21,553.49x = 29,743.53 × 12,122.05
  4. Step 4: Simplify right side
    21,553.49x = 360,552,549.56
  5. Step 5: Solve for x
    x = 360,552,549.56/21,553.49
  6. Step 6: Final answer
    x = 16,728.27

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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.