Home / 20,217.87-30,329.64-6,886.89

Finding the Fourth Proportional to 20,217.87, 30,329.64 and 6,886.89

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Solution

The fourth proportional to 20,217.87, 30,329.64 and 6,886.89 is: 10,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.87 : 30,329.64 = 6,886.89 : x
  2. Step 2: Convert to fraction form
    20,217.87/30,329.64 = 6,886.89/x
  3. Step 3: Cross multiply
    20,217.87x = 30,329.64 × 6,886.89
  4. Step 4: Simplify right side
    20,217.87x = 208,876,894.42
  5. Step 5: Solve for x
    x = 208,876,894.42/20,217.87
  6. Step 6: Final answer
    x = 10,331.30

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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.