Home / 20,578.64-30,850.68-8,275.28

Finding the Fourth Proportional to 20,578.64, 30,850.68 and 8,275.28

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Solution

The fourth proportional to 20,578.64, 30,850.68 and 8,275.28 is: 12,405.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578.64 : 30,850.68 = 8,275.28 : x
  2. Step 2: Convert to fraction form
    20,578.64/30,850.68 = 8,275.28/x
  3. Step 3: Cross multiply
    20,578.64x = 30,850.68 × 8,275.28
  4. Step 4: Simplify right side
    20,578.64x = 255,298,015.19
  5. Step 5: Solve for x
    x = 255,298,015.19/20,578.64
  6. Step 6: Final answer
    x = 12,405.97

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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.