Home / 28,540.30-39,384.48-15,964.78

Finding the Fourth Proportional to 28,540.30, 39,384.48 and 15,964.78

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Solution

The fourth proportional to 28,540.30, 39,384.48 and 15,964.78 is: 22,030.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,540.30 : 39,384.48 = 15,964.78 : x
  2. Step 2: Convert to fraction form
    28,540.30/39,384.48 = 15,964.78/x
  3. Step 3: Cross multiply
    28,540.30x = 39,384.48 × 15,964.78
  4. Step 4: Simplify right side
    28,540.30x = 628,764,558.61
  5. Step 5: Solve for x
    x = 628,764,558.61/28,540.30
  6. Step 6: Final answer
    x = 22,030.76

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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.