Home / 39,170.80-54,054.86-21,265.65

Finding the Fourth Proportional to 39,170.80, 54,054.86 and 21,265.65

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Solution

The fourth proportional to 39,170.80, 54,054.86 and 21,265.65 is: 29,346.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,170.80 : 54,054.86 = 21,265.65 : x
  2. Step 2: Convert to fraction form
    39,170.80/54,054.86 = 21,265.65/x
  3. Step 3: Cross multiply
    39,170.80x = 54,054.86 × 21,265.65
  4. Step 4: Simplify right side
    39,170.80x = 1,149,511,463.28
  5. Step 5: Solve for x
    x = 1,149,511,463.28/39,170.80
  6. Step 6: Final answer
    x = 29,346.14

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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.