Home / 39,177.80-54,065.04-21,272.44

Finding the Fourth Proportional to 39,177.80, 54,065.04 and 21,272.44

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Solution

The fourth proportional to 39,177.80, 54,065.04 and 21,272.44 is: 29,355.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,177.80 : 54,065.04 = 21,272.44 : x
  2. Step 2: Convert to fraction form
    39,177.80/54,065.04 = 21,272.44/x
  3. Step 3: Cross multiply
    39,177.80x = 54,065.04 × 21,272.44
  4. Step 4: Simplify right side
    39,177.80x = 1,150,095,319.50
  5. Step 5: Solve for x
    x = 1,150,095,319.50/39,177.80
  6. Step 6: Final answer
    x = 29,355.79

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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.