Home / 20,102.96-30,148.68-6,774.50

Finding the Fourth Proportional to 20,102.96, 30,148.68 and 6,774.50

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Solution

The fourth proportional to 20,102.96, 30,148.68 and 6,774.50 is: 10,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.96 : 30,148.68 = 6,774.50 : x
  2. Step 2: Convert to fraction form
    20,102.96/30,148.68 = 6,774.50/x
  3. Step 3: Cross multiply
    20,102.96x = 30,148.68 × 6,774.50
  4. Step 4: Simplify right side
    20,102.96x = 204,242,232.66
  5. Step 5: Solve for x
    x = 204,242,232.66/20,102.96
  6. Step 6: Final answer
    x = 10,159.81

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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.