Home / 27,824.64-38,401.68-15,885.28

Finding the Fourth Proportional to 27,824.64, 38,401.68 and 15,885.28

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Solution

The fourth proportional to 27,824.64, 38,401.68 and 15,885.28 is: 21,923.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,824.64 : 38,401.68 = 15,885.28 : x
  2. Step 2: Convert to fraction form
    27,824.64/38,401.68 = 15,885.28/x
  3. Step 3: Cross multiply
    27,824.64x = 38,401.68 × 15,885.28
  4. Step 4: Simplify right side
    27,824.64x = 610,021,439.27
  5. Step 5: Solve for x
    x = 610,021,439.27/27,824.64
  6. Step 6: Final answer
    x = 21,923.79

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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.