Home / 20,964.92-28,929.24-12,009.98

Finding the Fourth Proportional to 20,964.92, 28,929.24 and 12,009.98

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Solution

The fourth proportional to 20,964.92, 28,929.24 and 12,009.98 is: 16,572.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.92 : 28,929.24 = 12,009.98 : x
  2. Step 2: Convert to fraction form
    20,964.92/28,929.24 = 12,009.98/x
  3. Step 3: Cross multiply
    20,964.92x = 28,929.24 × 12,009.98
  4. Step 4: Simplify right side
    20,964.92x = 347,439,593.82
  5. Step 5: Solve for x
    x = 347,439,593.82/20,964.92
  6. Step 6: Final answer
    x = 16,572.43

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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.