Home / 39,386.46-54,351.60-21,481.56

Finding the Fourth Proportional to 39,386.46, 54,351.60 and 21,481.56

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Solution

The fourth proportional to 39,386.46, 54,351.60 and 21,481.56 is: 29,643.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,386.46 : 54,351.60 = 21,481.56 : x
  2. Step 2: Convert to fraction form
    39,386.46/54,351.60 = 21,481.56/x
  3. Step 3: Cross multiply
    39,386.46x = 54,351.60 × 21,481.56
  4. Step 4: Simplify right side
    39,386.46x = 1,167,557,156.50
  5. Step 5: Solve for x
    x = 1,167,557,156.50/39,386.46
  6. Step 6: Final answer
    x = 29,643.62

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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.