Home / 39,636.20-54,697.34-21,731.36

Finding the Fourth Proportional to 39,636.20, 54,697.34 and 21,731.36

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Solution

The fourth proportional to 39,636.20, 54,697.34 and 21,731.36 is: 29,988.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,636.20 : 54,697.34 = 21,731.36 : x
  2. Step 2: Convert to fraction form
    39,636.20/54,697.34 = 21,731.36/x
  3. Step 3: Cross multiply
    39,636.20x = 54,697.34 × 21,731.36
  4. Step 4: Simplify right side
    39,636.20x = 1,188,647,477.93
  5. Step 5: Solve for x
    x = 1,188,647,477.93/39,636.20
  6. Step 6: Final answer
    x = 29,988.94

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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.