Home / 27,997.88-38,637.12-15,422.64

Finding the Fourth Proportional to 27,997.88, 38,637.12 and 15,422.64

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Solution

The fourth proportional to 27,997.88, 38,637.12 and 15,422.64 is: 21,283.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,997.88 : 38,637.12 = 15,422.64 : x
  2. Step 2: Convert to fraction form
    27,997.88/38,637.12 = 15,422.64/x
  3. Step 3: Cross multiply
    27,997.88x = 38,637.12 × 15,422.64
  4. Step 4: Simplify right side
    27,997.88x = 595,886,392.40
  5. Step 5: Solve for x
    x = 595,886,392.40/27,997.88
  6. Step 6: Final answer
    x = 21,283.27

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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.