Home / 20,100.87-30,151.58-7,617.56

Finding the Fourth Proportional to 20,100.87, 30,151.58 and 7,617.56

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Solution

The fourth proportional to 20,100.87, 30,151.58 and 7,617.56 is: 11,426.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.87 : 30,151.58 = 7,617.56 : x
  2. Step 2: Convert to fraction form
    20,100.87/30,151.58 = 7,617.56/x
  3. Step 3: Cross multiply
    20,100.87x = 30,151.58 × 7,617.56
  4. Step 4: Simplify right side
    20,100.87x = 229,681,280.90
  5. Step 5: Solve for x
    x = 229,681,280.90/20,100.87
  6. Step 6: Final answer
    x = 11,426.43

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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.