Home / 39,877.22-55,033.06-21,972.22

Finding the Fourth Proportional to 39,877.22, 55,033.06 and 21,972.22

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Solution

The fourth proportional to 39,877.22, 55,033.06 and 21,972.22 is: 30,323.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,877.22 : 55,033.06 = 21,972.22 : x
  2. Step 2: Convert to fraction form
    39,877.22/55,033.06 = 21,972.22/x
  3. Step 3: Cross multiply
    39,877.22x = 55,033.06 × 21,972.22
  4. Step 4: Simplify right side
    39,877.22x = 1,209,198,501.59
  5. Step 5: Solve for x
    x = 1,209,198,501.59/39,877.22
  6. Step 6: Final answer
    x = 30,323.04

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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.