Home / 20,119.95-30,180.30-6,972.75

Finding the Fourth Proportional to 20,119.95, 30,180.30 and 6,972.75

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Solution

The fourth proportional to 20,119.95, 30,180.30 and 6,972.75 is: 10,459.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.95 : 30,180.30 = 6,972.75 : x
  2. Step 2: Convert to fraction form
    20,119.95/30,180.30 = 6,972.75/x
  3. Step 3: Cross multiply
    20,119.95x = 30,180.30 × 6,972.75
  4. Step 4: Simplify right side
    20,119.95x = 210,439,686.83
  5. Step 5: Solve for x
    x = 210,439,686.83/20,119.95
  6. Step 6: Final answer
    x = 10,459.25

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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.