Home / 21,309.91-31,964.83-5,727.54

Finding the Fourth Proportional to 21,309.91, 31,964.83 and 5,727.54

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Solution

The fourth proportional to 21,309.91, 31,964.83 and 5,727.54 is: 8,591.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.91 : 31,964.83 = 5,727.54 : x
  2. Step 2: Convert to fraction form
    21,309.91/31,964.83 = 5,727.54/x
  3. Step 3: Cross multiply
    21,309.91x = 31,964.83 × 5,727.54
  4. Step 4: Simplify right side
    21,309.91x = 183,079,842.42
  5. Step 5: Solve for x
    x = 183,079,842.42/21,309.91
  6. Step 6: Final answer
    x = 8,591.30

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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.