Home / 39,664.60-54,736.68-21,759.74

Finding the Fourth Proportional to 39,664.60, 54,736.68 and 21,759.74

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Solution

The fourth proportional to 39,664.60, 54,736.68 and 21,759.74 is: 30,028.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,664.60 : 54,736.68 = 21,759.74 : x
  2. Step 2: Convert to fraction form
    39,664.60/54,736.68 = 21,759.74/x
  3. Step 3: Cross multiply
    39,664.60x = 54,736.68 × 21,759.74
  4. Step 4: Simplify right side
    39,664.60x = 1,191,055,925.26
  5. Step 5: Solve for x
    x = 1,191,055,925.26/39,664.60
  6. Step 6: Final answer
    x = 30,028.18

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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.