Home / 22,375.13-30,878.57-13,419.36

Finding the Fourth Proportional to 22,375.13, 30,878.57 and 13,419.36

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Solution

The fourth proportional to 22,375.13, 30,878.57 and 13,419.36 is: 18,519.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,375.13 : 30,878.57 = 13,419.36 : x
  2. Step 2: Convert to fraction form
    22,375.13/30,878.57 = 13,419.36/x
  3. Step 3: Cross multiply
    22,375.13x = 30,878.57 × 13,419.36
  4. Step 4: Simplify right side
    22,375.13x = 414,370,580.02
  5. Step 5: Solve for x
    x = 414,370,580.02/22,375.13
  6. Step 6: Final answer
    x = 18,519.25

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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.