Home / 21,552.88-29,744.36-12,121.32

Finding the Fourth Proportional to 21,552.88, 29,744.36 and 12,121.32

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Solution

The fourth proportional to 21,552.88, 29,744.36 and 12,121.32 is: 16,728.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,552.88 : 29,744.36 = 12,121.32 : x
  2. Step 2: Convert to fraction form
    21,552.88/29,744.36 = 12,121.32/x
  3. Step 3: Cross multiply
    21,552.88x = 29,744.36 × 12,121.32
  4. Step 4: Simplify right side
    21,552.88x = 360,540,905.76
  5. Step 5: Solve for x
    x = 360,540,905.76/21,552.88
  6. Step 6: Final answer
    x = 16,728.20

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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.