Home / 20,813.33-31,219.92-7,486.30

Finding the Fourth Proportional to 20,813.33, 31,219.92 and 7,486.30

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Solution

The fourth proportional to 20,813.33, 31,219.92 and 7,486.30 is: 11,229.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,813.33 : 31,219.92 = 7,486.30 : x
  2. Step 2: Convert to fraction form
    20,813.33/31,219.92 = 7,486.30/x
  3. Step 3: Cross multiply
    20,813.33x = 31,219.92 × 7,486.30
  4. Step 4: Simplify right side
    20,813.33x = 233,721,693.64
  5. Step 5: Solve for x
    x = 233,721,693.64/20,813.33
  6. Step 6: Final answer
    x = 11,229.42

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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.