Home / 39,693.30-54,777.38-21,789.94

Finding the Fourth Proportional to 39,693.30, 54,777.38 and 21,789.94

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Solution

The fourth proportional to 39,693.30, 54,777.38 and 21,789.94 is: 30,070.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,693.30 : 54,777.38 = 21,789.94 : x
  2. Step 2: Convert to fraction form
    39,693.30/54,777.38 = 21,789.94/x
  3. Step 3: Cross multiply
    39,693.30x = 54,777.38 × 21,789.94
  4. Step 4: Simplify right side
    39,693.30x = 1,193,595,823.56
  5. Step 5: Solve for x
    x = 1,193,595,823.56/39,693.30
  6. Step 6: Final answer
    x = 30,070.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.