Home / 39,859.34-55,005.21-21,956.00

Finding the Fourth Proportional to 39,859.34, 55,005.21 and 21,956.00

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Solution

The fourth proportional to 39,859.34, 55,005.21 and 21,956.00 is: 30,298.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,859.34 : 55,005.21 = 21,956.00 : x
  2. Step 2: Convert to fraction form
    39,859.34/55,005.21 = 21,956.00/x
  3. Step 3: Cross multiply
    39,859.34x = 55,005.21 × 21,956.00
  4. Step 4: Simplify right side
    39,859.34x = 1,207,694,115.73
  5. Step 5: Solve for x
    x = 1,207,694,115.73/39,859.34
  6. Step 6: Final answer
    x = 30,298.90

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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.