Home / 39,915.69-55,083.31-22,011.45

Finding the Fourth Proportional to 39,915.69, 55,083.31 and 22,011.45

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Solution

The fourth proportional to 39,915.69, 55,083.31 and 22,011.45 is: 30,375.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,915.69 : 55,083.31 = 22,011.45 : x
  2. Step 2: Convert to fraction form
    39,915.69/55,083.31 = 22,011.45/x
  3. Step 3: Cross multiply
    39,915.69x = 55,083.31 × 22,011.45
  4. Step 4: Simplify right side
    39,915.69x = 1,212,463,523.90
  5. Step 5: Solve for x
    x = 1,212,463,523.90/39,915.69
  6. Step 6: Final answer
    x = 30,375.61

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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.