Home / 20,961.48-31,447.69-6,169.92

Finding the Fourth Proportional to 20,961.48, 31,447.69 and 6,169.92

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Solution

The fourth proportional to 20,961.48, 31,447.69 and 6,169.92 is: 9,256.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.48 : 31,447.69 = 6,169.92 : x
  2. Step 2: Convert to fraction form
    20,961.48/31,447.69 = 6,169.92/x
  3. Step 3: Cross multiply
    20,961.48x = 31,447.69 × 6,169.92
  4. Step 4: Simplify right side
    20,961.48x = 194,029,809.73
  5. Step 5: Solve for x
    x = 194,029,809.73/20,961.48
  6. Step 6: Final answer
    x = 9,256.49

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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.