Home / 20,721.94-31,078.38-5,926.88

Finding the Fourth Proportional to 20,721.94, 31,078.38 and 5,926.88

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Solution

The fourth proportional to 20,721.94, 31,078.38 and 5,926.88 is: 8,889.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721.94 : 31,078.38 = 5,926.88 : x
  2. Step 2: Convert to fraction form
    20,721.94/31,078.38 = 5,926.88/x
  3. Step 3: Cross multiply
    20,721.94x = 31,078.38 × 5,926.88
  4. Step 4: Simplify right side
    20,721.94x = 184,197,828.85
  5. Step 5: Solve for x
    x = 184,197,828.85/20,721.94
  6. Step 6: Final answer
    x = 8,889.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.