Home / 21,280.50-31,917.11-5,694.48

Finding the Fourth Proportional to 21,280.50, 31,917.11 and 5,694.48

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Solution

The fourth proportional to 21,280.50, 31,917.11 and 5,694.48 is: 8,540.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280.50 : 31,917.11 = 5,694.48 : x
  2. Step 2: Convert to fraction form
    21,280.50/31,917.11 = 5,694.48/x
  3. Step 3: Cross multiply
    21,280.50x = 31,917.11 × 5,694.48
  4. Step 4: Simplify right side
    21,280.50x = 181,751,316.08
  5. Step 5: Solve for x
    x = 181,751,316.08/21,280.50
  6. Step 6: Final answer
    x = 8,540.74

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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.