Home / 20,236.45-30,356.88-7,767.07

Finding the Fourth Proportional to 20,236.45, 30,356.88 and 7,767.07

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Solution

The fourth proportional to 20,236.45, 30,356.88 and 7,767.07 is: 11,651.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,236.45 : 30,356.88 = 7,767.07 : x
  2. Step 2: Convert to fraction form
    20,236.45/30,356.88 = 7,767.07/x
  3. Step 3: Cross multiply
    20,236.45x = 30,356.88 × 7,767.07
  4. Step 4: Simplify right side
    20,236.45x = 235,784,011.94
  5. Step 5: Solve for x
    x = 235,784,011.94/20,236.45
  6. Step 6: Final answer
    x = 11,651.45

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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.