Home / 20,964.96-31,448.80-5,382.24

Finding the Fourth Proportional to 20,964.96, 31,448.80 and 5,382.24

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Solution

The fourth proportional to 20,964.96, 31,448.80 and 5,382.24 is: 8,073.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.96 : 31,448.80 = 5,382.24 : x
  2. Step 2: Convert to fraction form
    20,964.96/31,448.80 = 5,382.24/x
  3. Step 3: Cross multiply
    20,964.96x = 31,448.80 × 5,382.24
  4. Step 4: Simplify right side
    20,964.96x = 169,264,989.31
  5. Step 5: Solve for x
    x = 169,264,989.31/20,964.96
  6. Step 6: Final answer
    x = 8,073.71

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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.