Home / 21,025.46-31,530.48-6,982.89

Finding the Fourth Proportional to 21,025.46, 31,530.48 and 6,982.89

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Solution

The fourth proportional to 21,025.46, 31,530.48 and 6,982.89 is: 10,471.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.46 : 31,530.48 = 6,982.89 : x
  2. Step 2: Convert to fraction form
    21,025.46/31,530.48 = 6,982.89/x
  3. Step 3: Cross multiply
    21,025.46x = 31,530.48 × 6,982.89
  4. Step 4: Simplify right side
    21,025.46x = 220,173,873.49
  5. Step 5: Solve for x
    x = 220,173,873.49/21,025.46
  6. Step 6: Final answer
    x = 10,471.78

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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.