Home / 22,378.05-30,884.40-13,425.21

Finding the Fourth Proportional to 22,378.05, 30,884.40 and 13,425.21

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Solution

The fourth proportional to 22,378.05, 30,884.40 and 13,425.21 is: 18,528.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,378.05 : 30,884.40 = 13,425.21 : x
  2. Step 2: Convert to fraction form
    22,378.05/30,884.40 = 13,425.21/x
  3. Step 3: Cross multiply
    22,378.05x = 30,884.40 × 13,425.21
  4. Step 4: Simplify right side
    22,378.05x = 414,629,555.72
  5. Step 5: Solve for x
    x = 414,629,555.72/22,378.05
  6. Step 6: Final answer
    x = 18,528.40

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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.