Home / 10,121.25-15,191.60-4,930.77

Finding the Fourth Proportional to 10,121.25, 15,191.60 and 4,930.77

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Solution

The fourth proportional to 10,121.25, 15,191.60 and 4,930.77 is: 7,400.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.25 : 15,191.60 = 4,930.77 : x
  2. Step 2: Convert to fraction form
    10,121.25/15,191.60 = 4,930.77/x
  3. Step 3: Cross multiply
    10,121.25x = 15,191.60 × 4,930.77
  4. Step 4: Simplify right side
    10,121.25x = 74,906,345.58
  5. Step 5: Solve for x
    x = 74,906,345.58/10,121.25
  6. Step 6: Final answer
    x = 7,400.90

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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.