Home / 20,769.21-31,151.32-5,777.46

Finding the Fourth Proportional to 20,769.21, 31,151.32 and 5,777.46

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Solution

The fourth proportional to 20,769.21, 31,151.32 and 5,777.46 is: 8,665.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.21 : 31,151.32 = 5,777.46 : x
  2. Step 2: Convert to fraction form
    20,769.21/31,151.32 = 5,777.46/x
  3. Step 3: Cross multiply
    20,769.21x = 31,151.32 × 5,777.46
  4. Step 4: Simplify right side
    20,769.21x = 179,975,490.80
  5. Step 5: Solve for x
    x = 179,975,490.80/20,769.21
  6. Step 6: Final answer
    x = 8,665.50

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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.