Home / 10,121.23-15,191.55-4,930.75

Finding the Fourth Proportional to 10,121.23, 15,191.55 and 4,930.75

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Solution

The fourth proportional to 10,121.23, 15,191.55 and 4,930.75 is: 7,400.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.23 : 15,191.55 = 4,930.75 : x
  2. Step 2: Convert to fraction form
    10,121.23/15,191.55 = 4,930.75/x
  3. Step 3: Cross multiply
    10,121.23x = 15,191.55 × 4,930.75
  4. Step 4: Simplify right side
    10,121.23x = 74,905,735.16
  5. Step 5: Solve for x
    x = 74,905,735.16/10,121.23
  6. Step 6: Final answer
    x = 7,400.85

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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.