Home / 39,718.58-54,812.30-21,815.24

Finding the Fourth Proportional to 39,718.58, 54,812.30 and 21,815.24

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Solution

The fourth proportional to 39,718.58, 54,812.30 and 21,815.24 is: 30,105.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.58 : 54,812.30 = 21,815.24 : x
  2. Step 2: Convert to fraction form
    39,718.58/54,812.30 = 21,815.24/x
  3. Step 3: Cross multiply
    39,718.58x = 54,812.30 × 21,815.24
  4. Step 4: Simplify right side
    39,718.58x = 1,195,743,096.31
  5. Step 5: Solve for x
    x = 1,195,743,096.31/39,718.58
  6. Step 6: Final answer
    x = 30,105.39

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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.