Home / 30,967.27-42,711.03-20,879.73

Finding the Fourth Proportional to 30,967.27, 42,711.03 and 20,879.73

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Solution

The fourth proportional to 30,967.27, 42,711.03 and 20,879.73 is: 28,797.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,967.27 : 42,711.03 = 20,879.73 : x
  2. Step 2: Convert to fraction form
    30,967.27/42,711.03 = 20,879.73/x
  3. Step 3: Cross multiply
    30,967.27x = 42,711.03 × 20,879.73
  4. Step 4: Simplify right side
    30,967.27x = 891,794,774.42
  5. Step 5: Solve for x
    x = 891,794,774.42/30,967.27
  6. Step 6: Final answer
    x = 28,797.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.