Home / 39,759.39-54,866.97-21,609.32

Finding the Fourth Proportional to 39,759.39, 54,866.97 and 21,609.32

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Solution

The fourth proportional to 39,759.39, 54,866.97 and 21,609.32 is: 29,820.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,759.39 : 54,866.97 = 21,609.32 : x
  2. Step 2: Convert to fraction form
    39,759.39/54,866.97 = 21,609.32/x
  3. Step 3: Cross multiply
    39,759.39x = 54,866.97 × 21,609.32
  4. Step 4: Simplify right side
    39,759.39x = 1,185,637,637.83
  5. Step 5: Solve for x
    x = 1,185,637,637.83/39,759.39
  6. Step 6: Final answer
    x = 29,820.32

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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.