Home / 27,623.88-38,121.96-15,686.90

Finding the Fourth Proportional to 27,623.88, 38,121.96 and 15,686.90

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Solution

The fourth proportional to 27,623.88, 38,121.96 and 15,686.90 is: 21,648.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,623.88 : 38,121.96 = 15,686.90 : x
  2. Step 2: Convert to fraction form
    27,623.88/38,121.96 = 15,686.90/x
  3. Step 3: Cross multiply
    27,623.88x = 38,121.96 × 15,686.90
  4. Step 4: Simplify right side
    27,623.88x = 598,015,374.32
  5. Step 5: Solve for x
    x = 598,015,374.32/27,623.88
  6. Step 6: Final answer
    x = 21,648.49

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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.