Home / 20,435.14-30,611.40-18,734.14

Finding the Fourth Proportional to 20,435.14, 30,611.40 and 18,734.14

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Solution

The fourth proportional to 20,435.14, 30,611.40 and 18,734.14 is: 28,063.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.14 : 30,611.40 = 18,734.14 : x
  2. Step 2: Convert to fraction form
    20,435.14/30,611.40 = 18,734.14/x
  3. Step 3: Cross multiply
    20,435.14x = 30,611.40 × 18,734.14
  4. Step 4: Simplify right side
    20,435.14x = 573,478,253.20
  5. Step 5: Solve for x
    x = 573,478,253.20/20,435.14
  6. Step 6: Final answer
    x = 28,063.34

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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.