Home / 20,160.97-30,216.75-15,215.11

Finding the Fourth Proportional to 20,160.97, 30,216.75 and 15,215.11

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Solution

The fourth proportional to 20,160.97, 30,216.75 and 15,215.11 is: 22,804.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.97 : 30,216.75 = 15,215.11 : x
  2. Step 2: Convert to fraction form
    20,160.97/30,216.75 = 15,215.11/x
  3. Step 3: Cross multiply
    20,160.97x = 30,216.75 × 15,215.11
  4. Step 4: Simplify right side
    20,160.97x = 459,751,175.09
  5. Step 5: Solve for x
    x = 459,751,175.09/20,160.97
  6. Step 6: Final answer
    x = 22,804.02

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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.