Home / 21,760.97-29,998.40-15,367.64

Finding the Fourth Proportional to 21,760.97, 29,998.40 and 15,367.64

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Solution

The fourth proportional to 21,760.97, 29,998.40 and 15,367.64 is: 21,184.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,760.97 : 29,998.40 = 15,367.64 : x
  2. Step 2: Convert to fraction form
    21,760.97/29,998.40 = 15,367.64/x
  3. Step 3: Cross multiply
    21,760.97x = 29,998.40 × 15,367.64
  4. Step 4: Simplify right side
    21,760.97x = 461,004,384.95
  5. Step 5: Solve for x
    x = 461,004,384.95/21,760.97
  6. Step 6: Final answer
    x = 21,184.92

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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.