Home / 20,975.88-31,426.91-19,727.24

Finding the Fourth Proportional to 20,975.88, 31,426.91 and 19,727.24

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Solution

The fourth proportional to 20,975.88, 31,426.91 and 19,727.24 is: 29,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.88 : 31,426.91 = 19,727.24 : x
  2. Step 2: Convert to fraction form
    20,975.88/31,426.91 = 19,727.24/x
  3. Step 3: Cross multiply
    20,975.88x = 31,426.91 × 19,727.24
  4. Step 4: Simplify right side
    20,975.88x = 619,966,196.03
  5. Step 5: Solve for x
    x = 619,966,196.03/20,975.88
  6. Step 6: Final answer
    x = 29,556.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.