Home / 21,331.66-31,998.74-6,540.72

Finding the Fourth Proportional to 21,331.66, 31,998.74 and 6,540.72

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Solution

The fourth proportional to 21,331.66, 31,998.74 and 6,540.72 is: 9,811.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.66 : 31,998.74 = 6,540.72 : x
  2. Step 2: Convert to fraction form
    21,331.66/31,998.74 = 6,540.72/x
  3. Step 3: Cross multiply
    21,331.66x = 31,998.74 × 6,540.72
  4. Step 4: Simplify right side
    21,331.66x = 209,294,765.99
  5. Step 5: Solve for x
    x = 209,294,765.99/21,331.66
  6. Step 6: Final answer
    x = 9,811.46

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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.