Home / 22,387.12-30,883.87-13,419.06

Finding the Fourth Proportional to 22,387.12, 30,883.87 and 13,419.06

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Solution

The fourth proportional to 22,387.12, 30,883.87 and 13,419.06 is: 18,512.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,387.12 : 30,883.87 = 13,419.06 : x
  2. Step 2: Convert to fraction form
    22,387.12/30,883.87 = 13,419.06/x
  3. Step 3: Cross multiply
    22,387.12x = 30,883.87 × 13,419.06
  4. Step 4: Simplify right side
    22,387.12x = 414,432,504.56
  5. Step 5: Solve for x
    x = 414,432,504.56/22,387.12
  6. Step 6: Final answer
    x = 18,512.10

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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.