Home / 39,694.98-54,775.64-21,789.92

Finding the Fourth Proportional to 39,694.98, 54,775.64 and 21,789.92

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Solution

The fourth proportional to 39,694.98, 54,775.64 and 21,789.92 is: 30,068.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,694.98 : 54,775.64 = 21,789.92 : x
  2. Step 2: Convert to fraction form
    39,694.98/54,775.64 = 21,789.92/x
  3. Step 3: Cross multiply
    39,694.98x = 54,775.64 × 21,789.92
  4. Step 4: Simplify right side
    39,694.98x = 1,193,556,813.55
  5. Step 5: Solve for x
    x = 1,193,556,813.55/39,694.98
  6. Step 6: Final answer
    x = 30,068.21

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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.