Home / 19,760.88-27,296.64-15,810.24

Finding the Fourth Proportional to 19,760.88, 27,296.64 and 15,810.24

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Solution

The fourth proportional to 19,760.88, 27,296.64 and 15,810.24 is: 21,839.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,760.88 : 27,296.64 = 15,810.24 : x
  2. Step 2: Convert to fraction form
    19,760.88/27,296.64 = 15,810.24/x
  3. Step 3: Cross multiply
    19,760.88x = 27,296.64 × 15,810.24
  4. Step 4: Simplify right side
    19,760.88x = 431,566,429.59
  5. Step 5: Solve for x
    x = 431,566,429.59/19,760.88
  6. Step 6: Final answer
    x = 21,839.43

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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.