Home / 27,664.19-38,179.80-15,729.31

Finding the Fourth Proportional to 27,664.19, 38,179.80 and 15,729.31

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Solution

The fourth proportional to 27,664.19, 38,179.80 and 15,729.31 is: 21,708.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,664.19 : 38,179.80 = 15,729.31 : x
  2. Step 2: Convert to fraction form
    27,664.19/38,179.80 = 15,729.31/x
  3. Step 3: Cross multiply
    27,664.19x = 38,179.80 × 15,729.31
  4. Step 4: Simplify right side
    27,664.19x = 600,541,909.94
  5. Step 5: Solve for x
    x = 600,541,909.94/27,664.19
  6. Step 6: Final answer
    x = 21,708.28

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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.