Home / 20,378.60-30,572.30-6,338.36

Finding the Fourth Proportional to 20,378.60, 30,572.30 and 6,338.36

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Solution

The fourth proportional to 20,378.60, 30,572.30 and 6,338.36 is: 9,508.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.60 : 30,572.30 = 6,338.36 : x
  2. Step 2: Convert to fraction form
    20,378.60/30,572.30 = 6,338.36/x
  3. Step 3: Cross multiply
    20,378.60x = 30,572.30 × 6,338.36
  4. Step 4: Simplify right side
    20,378.60x = 193,778,058.87
  5. Step 5: Solve for x
    x = 193,778,058.87/20,378.60
  6. Step 6: Final answer
    x = 9,508.90

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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.