Home / 20,667.15-31,000.86-6,629.31

Finding the Fourth Proportional to 20,667.15, 31,000.86 and 6,629.31

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Solution

The fourth proportional to 20,667.15, 31,000.86 and 6,629.31 is: 9,944.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.15 : 31,000.86 = 6,629.31 : x
  2. Step 2: Convert to fraction form
    20,667.15/31,000.86 = 6,629.31/x
  3. Step 3: Cross multiply
    20,667.15x = 31,000.86 × 6,629.31
  4. Step 4: Simplify right side
    20,667.15x = 205,514,311.21
  5. Step 5: Solve for x
    x = 205,514,311.21/20,667.15
  6. Step 6: Final answer
    x = 9,944.01

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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.