Home / 20,019.72-30,030.20-6,871.92

Finding the Fourth Proportional to 20,019.72, 30,030.20 and 6,871.92

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Solution

The fourth proportional to 20,019.72, 30,030.20 and 6,871.92 is: 10,308.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,019.72 : 30,030.20 = 6,871.92 : x
  2. Step 2: Convert to fraction form
    20,019.72/30,030.20 = 6,871.92/x
  3. Step 3: Cross multiply
    20,019.72x = 30,030.20 × 6,871.92
  4. Step 4: Simplify right side
    20,019.72x = 206,365,131.98
  5. Step 5: Solve for x
    x = 206,365,131.98/20,019.72
  6. Step 6: Final answer
    x = 10,308.09

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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.