Home / 39,772.89-54,886.09-21,867.74

Finding the Fourth Proportional to 39,772.89, 54,886.09 and 21,867.74

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Solution

The fourth proportional to 39,772.89, 54,886.09 and 21,867.74 is: 30,177.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,772.89 : 54,886.09 = 21,867.74 : x
  2. Step 2: Convert to fraction form
    39,772.89/54,886.09 = 21,867.74/x
  3. Step 3: Cross multiply
    39,772.89x = 54,886.09 × 21,867.74
  4. Step 4: Simplify right side
    39,772.89x = 1,200,234,361.97
  5. Step 5: Solve for x
    x = 1,200,234,361.97/39,772.89
  6. Step 6: Final answer
    x = 30,177.20

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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.