Home / 20,850.89-31,276.33-7,009.61

Finding the Fourth Proportional to 20,850.89, 31,276.33 and 7,009.61

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Solution

The fourth proportional to 20,850.89, 31,276.33 and 7,009.61 is: 10,514.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.89 : 31,276.33 = 7,009.61 : x
  2. Step 2: Convert to fraction form
    20,850.89/31,276.33 = 7,009.61/x
  3. Step 3: Cross multiply
    20,850.89x = 31,276.33 × 7,009.61
  4. Step 4: Simplify right side
    20,850.89x = 219,234,701.63
  5. Step 5: Solve for x
    x = 219,234,701.63/20,850.89
  6. Step 6: Final answer
    x = 10,514.41

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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.