Home / 39,719.72-54,813.30-21,815.94

Finding the Fourth Proportional to 39,719.72, 54,813.30 and 21,815.94

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Solution

The fourth proportional to 39,719.72, 54,813.30 and 21,815.94 is: 30,106.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,719.72 : 54,813.30 = 21,815.94 : x
  2. Step 2: Convert to fraction form
    39,719.72/54,813.30 = 21,815.94/x
  3. Step 3: Cross multiply
    39,719.72x = 54,813.30 × 21,815.94
  4. Step 4: Simplify right side
    39,719.72x = 1,195,803,664.00
  5. Step 5: Solve for x
    x = 1,195,803,664.00/39,719.72
  6. Step 6: Final answer
    x = 30,106.04

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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.