Home / 39,698.10-54,783-21,792.66

Finding the Fourth Proportional to 39,698.10, 54,783 and 21,792.66

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Solution

The fourth proportional to 39,698.10, 54,783 and 21,792.66 is: 30,073.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,698.10 : 54,783 = 21,792.66 : x
  2. Step 2: Convert to fraction form
    39,698.10/54,783 = 21,792.66/x
  3. Step 3: Cross multiply
    39,698.10x = 54,783 × 21,792.66
  4. Step 4: Simplify right side
    39,698.10x = 1,193,867,292.78
  5. Step 5: Solve for x
    x = 1,193,867,292.78/39,698.10
  6. Step 6: Final answer
    x = 30,073.66

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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.