Home / 20,258.32-30,403.68-8,579.68

Finding the Fourth Proportional to 20,258.32, 30,403.68 and 8,579.68

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Solution

The fourth proportional to 20,258.32, 30,403.68 and 8,579.68 is: 12,876.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.32 : 30,403.68 = 8,579.68 : x
  2. Step 2: Convert to fraction form
    20,258.32/30,403.68 = 8,579.68/x
  3. Step 3: Cross multiply
    20,258.32x = 30,403.68 × 8,579.68
  4. Step 4: Simplify right side
    20,258.32x = 260,853,845.22
  5. Step 5: Solve for x
    x = 260,853,845.22/20,258.32
  6. Step 6: Final answer
    x = 12,876.38

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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.