Home / 20,698.97-30,953.07-15,372.20

Finding the Fourth Proportional to 20,698.97, 30,953.07 and 15,372.20

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Solution

The fourth proportional to 20,698.97, 30,953.07 and 15,372.20 is: 22,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.97 : 30,953.07 = 15,372.20 : x
  2. Step 2: Convert to fraction form
    20,698.97/30,953.07 = 15,372.20/x
  3. Step 3: Cross multiply
    20,698.97x = 30,953.07 × 15,372.20
  4. Step 4: Simplify right side
    20,698.97x = 475,816,860.04
  5. Step 5: Solve for x
    x = 475,816,860.04/20,698.97
  6. Step 6: Final answer
    x = 22,987.47

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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.