Home / 20,790.31-31,181.70-5,995.59

Finding the Fourth Proportional to 20,790.31, 31,181.70 and 5,995.59

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Solution

The fourth proportional to 20,790.31, 31,181.70 and 5,995.59 is: 8,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790.31 : 31,181.70 = 5,995.59 : x
  2. Step 2: Convert to fraction form
    20,790.31/31,181.70 = 5,995.59/x
  3. Step 3: Cross multiply
    20,790.31x = 31,181.70 × 5,995.59
  4. Step 4: Simplify right side
    20,790.31x = 186,952,688.70
  5. Step 5: Solve for x
    x = 186,952,688.70/20,790.31
  6. Step 6: Final answer
    x = 8,992.30

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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.