Home / 20,119.96-30,180.28-6,972.72

Finding the Fourth Proportional to 20,119.96, 30,180.28 and 6,972.72

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Solution

The fourth proportional to 20,119.96, 30,180.28 and 6,972.72 is: 10,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.96 : 30,180.28 = 6,972.72 : x
  2. Step 2: Convert to fraction form
    20,119.96/30,180.28 = 6,972.72/x
  3. Step 3: Cross multiply
    20,119.96x = 30,180.28 × 6,972.72
  4. Step 4: Simplify right side
    20,119.96x = 210,438,641.96
  5. Step 5: Solve for x
    x = 210,438,641.96/20,119.96
  6. Step 6: Final answer
    x = 10,459.20

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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.