Home / 27,722.88-38,253.15-15,786.45

Finding the Fourth Proportional to 27,722.88, 38,253.15 and 15,786.45

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Solution

The fourth proportional to 27,722.88, 38,253.15 and 15,786.45 is: 21,782.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,722.88 : 38,253.15 = 15,786.45 : x
  2. Step 2: Convert to fraction form
    27,722.88/38,253.15 = 15,786.45/x
  3. Step 3: Cross multiply
    27,722.88x = 38,253.15 × 15,786.45
  4. Step 4: Simplify right side
    27,722.88x = 603,881,439.82
  5. Step 5: Solve for x
    x = 603,881,439.82/27,722.88
  6. Step 6: Final answer
    x = 21,782.78

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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.