Home / 21,173.86-29,220.15-11,743.03

Finding the Fourth Proportional to 21,173.86, 29,220.15 and 11,743.03

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Solution

The fourth proportional to 21,173.86, 29,220.15 and 11,743.03 is: 16,205.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.86 : 29,220.15 = 11,743.03 : x
  2. Step 2: Convert to fraction form
    21,173.86/29,220.15 = 11,743.03/x
  3. Step 3: Cross multiply
    21,173.86x = 29,220.15 × 11,743.03
  4. Step 4: Simplify right side
    21,173.86x = 343,133,098.05
  5. Step 5: Solve for x
    x = 343,133,098.05/21,173.86
  6. Step 6: Final answer
    x = 16,205.51

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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.