Home / 39,215.97-54,116.60-21,310.59

Finding the Fourth Proportional to 39,215.97, 54,116.60 and 21,310.59

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Solution

The fourth proportional to 39,215.97, 54,116.60 and 21,310.59 is: 29,407.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,215.97 : 54,116.60 = 21,310.59 : x
  2. Step 2: Convert to fraction form
    39,215.97/54,116.60 = 21,310.59/x
  3. Step 3: Cross multiply
    39,215.97x = 54,116.60 × 21,310.59
  4. Step 4: Simplify right side
    39,215.97x = 1,153,256,674.79
  5. Step 5: Solve for x
    x = 1,153,256,674.79/39,215.97
  6. Step 6: Final answer
    x = 29,407.83

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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.