Home / 21,080.96-31,625.59-6,289.55

Finding the Fourth Proportional to 21,080.96, 31,625.59 and 6,289.55

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Solution

The fourth proportional to 21,080.96, 31,625.59 and 6,289.55 is: 9,435.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.96 : 31,625.59 = 6,289.55 : x
  2. Step 2: Convert to fraction form
    21,080.96/31,625.59 = 6,289.55/x
  3. Step 3: Cross multiply
    21,080.96x = 31,625.59 × 6,289.55
  4. Step 4: Simplify right side
    21,080.96x = 198,910,729.58
  5. Step 5: Solve for x
    x = 198,910,729.58/21,080.96
  6. Step 6: Final answer
    x = 9,435.56

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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.