Home / 20,849.76-31,274.64-7,008.48

Finding the Fourth Proportional to 20,849.76, 31,274.64 and 7,008.48

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Solution

The fourth proportional to 20,849.76, 31,274.64 and 7,008.48 is: 10,512.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.76 : 31,274.64 = 7,008.48 : x
  2. Step 2: Convert to fraction form
    20,849.76/31,274.64 = 7,008.48/x
  3. Step 3: Cross multiply
    20,849.76x = 31,274.64 × 7,008.48
  4. Step 4: Simplify right side
    20,849.76x = 219,187,688.95
  5. Step 5: Solve for x
    x = 219,187,688.95/20,849.76
  6. Step 6: Final answer
    x = 10,512.72

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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.