Home / 20,101.79-30,153.14-7,627.69

Finding the Fourth Proportional to 20,101.79, 30,153.14 and 7,627.69

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Solution

The fourth proportional to 20,101.79, 30,153.14 and 7,627.69 is: 11,441.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.79 : 30,153.14 = 7,627.69 : x
  2. Step 2: Convert to fraction form
    20,101.79/30,153.14 = 7,627.69/x
  3. Step 3: Cross multiply
    20,101.79x = 30,153.14 × 7,627.69
  4. Step 4: Simplify right side
    20,101.79x = 229,998,804.45
  5. Step 5: Solve for x
    x = 229,998,804.45/20,101.79
  6. Step 6: Final answer
    x = 11,441.71

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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.