Home / 20,102.15-30,154.50-6,774.06

Finding the Fourth Proportional to 20,102.15, 30,154.50 and 6,774.06

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Solution

The fourth proportional to 20,102.15, 30,154.50 and 6,774.06 is: 10,161.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.15 : 30,154.50 = 6,774.06 : x
  2. Step 2: Convert to fraction form
    20,102.15/30,154.50 = 6,774.06/x
  3. Step 3: Cross multiply
    20,102.15x = 30,154.50 × 6,774.06
  4. Step 4: Simplify right side
    20,102.15x = 204,268,392.27
  5. Step 5: Solve for x
    x = 204,268,392.27/20,102.15
  6. Step 6: Final answer
    x = 10,161.52

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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.