Home / 39,759.14-54,868.32-21,854.09

Finding the Fourth Proportional to 39,759.14, 54,868.32 and 21,854.09

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Solution

The fourth proportional to 39,759.14, 54,868.32 and 21,854.09 is: 30,159.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,759.14 : 54,868.32 = 21,854.09 : x
  2. Step 2: Convert to fraction form
    39,759.14/54,868.32 = 21,854.09/x
  3. Step 3: Cross multiply
    39,759.14x = 54,868.32 × 21,854.09
  4. Step 4: Simplify right side
    39,759.14x = 1,199,097,340.60
  5. Step 5: Solve for x
    x = 1,199,097,340.60/39,759.14
  6. Step 6: Final answer
    x = 30,159.03

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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.