Home / 39,961.98-55,147.48-22,057

Finding the Fourth Proportional to 39,961.98, 55,147.48 and 22,057

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Solution

The fourth proportional to 39,961.98, 55,147.48 and 22,057 is: 30,438.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,961.98 : 55,147.48 = 22,057 : x
  2. Step 2: Convert to fraction form
    39,961.98/55,147.48 = 22,057/x
  3. Step 3: Cross multiply
    39,961.98x = 55,147.48 × 22,057
  4. Step 4: Simplify right side
    39,961.98x = 1,216,387,966.36
  5. Step 5: Solve for x
    x = 1,216,387,966.36/39,961.98
  6. Step 6: Final answer
    x = 30,438.63

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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.