Home / 39,627.60-54,685.74-21,722.55

Finding the Fourth Proportional to 39,627.60, 54,685.74 and 21,722.55

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Solution

The fourth proportional to 39,627.60, 54,685.74 and 21,722.55 is: 29,976.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,627.60 : 54,685.74 = 21,722.55 : x
  2. Step 2: Convert to fraction form
    39,627.60/54,685.74 = 21,722.55/x
  3. Step 3: Cross multiply
    39,627.60x = 54,685.74 × 21,722.55
  4. Step 4: Simplify right side
    39,627.60x = 1,187,913,721.44
  5. Step 5: Solve for x
    x = 1,187,913,721.44/39,627.60
  6. Step 6: Final answer
    x = 29,976.93

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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.