Home / 20,922.08-31,383.10-5,339.71

Finding the Fourth Proportional to 20,922.08, 31,383.10 and 5,339.71

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Solution

The fourth proportional to 20,922.08, 31,383.10 and 5,339.71 is: 8,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.08 : 31,383.10 = 5,339.71 : x
  2. Step 2: Convert to fraction form
    20,922.08/31,383.10 = 5,339.71/x
  3. Step 3: Cross multiply
    20,922.08x = 31,383.10 × 5,339.71
  4. Step 4: Simplify right side
    20,922.08x = 167,576,652.90
  5. Step 5: Solve for x
    x = 167,576,652.90/20,922.08
  6. Step 6: Final answer
    x = 8,009.56

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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.