Home / 20,611.32-30,916.92-13,540.19

Finding the Fourth Proportional to 20,611.32, 30,916.92 and 13,540.19

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Solution

The fourth proportional to 20,611.32, 30,916.92 and 13,540.19 is: 20,310.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.32 : 30,916.92 = 13,540.19 : x
  2. Step 2: Convert to fraction form
    20,611.32/30,916.92 = 13,540.19/x
  3. Step 3: Cross multiply
    20,611.32x = 30,916.92 × 13,540.19
  4. Step 4: Simplify right side
    20,611.32x = 418,620,816.43
  5. Step 5: Solve for x
    x = 418,620,816.43/20,611.32
  6. Step 6: Final answer
    x = 20,310.24

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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.