Home / 39,627.90-54,685.35-21,722.58

Finding the Fourth Proportional to 39,627.90, 54,685.35 and 21,722.58

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Solution

The fourth proportional to 39,627.90, 54,685.35 and 21,722.58 is: 29,976.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,627.90 : 54,685.35 = 21,722.58 : x
  2. Step 2: Convert to fraction form
    39,627.90/54,685.35 = 21,722.58/x
  3. Step 3: Cross multiply
    39,627.90x = 54,685.35 × 21,722.58
  4. Step 4: Simplify right side
    39,627.90x = 1,187,906,890.20
  5. Step 5: Solve for x
    x = 1,187,906,890.20/39,627.90
  6. Step 6: Final answer
    x = 29,976.53

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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.