Home / 22,720.88-31,367.84-15,192.12

Finding the Fourth Proportional to 22,720.88, 31,367.84 and 15,192.12

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Solution

The fourth proportional to 22,720.88, 31,367.84 and 15,192.12 is: 20,973.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,720.88 : 31,367.84 = 15,192.12 : x
  2. Step 2: Convert to fraction form
    22,720.88/31,367.84 = 15,192.12/x
  3. Step 3: Cross multiply
    22,720.88x = 31,367.84 × 15,192.12
  4. Step 4: Simplify right side
    22,720.88x = 476,543,989.42
  5. Step 5: Solve for x
    x = 476,543,989.42/22,720.88
  6. Step 6: Final answer
    x = 20,973.84

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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.