Home / 20,961.83-28,926.03-12,007.28

Finding the Fourth Proportional to 20,961.83, 28,926.03 and 12,007.28

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Solution

The fourth proportional to 20,961.83, 28,926.03 and 12,007.28 is: 16,569.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.83 : 28,926.03 = 12,007.28 : x
  2. Step 2: Convert to fraction form
    20,961.83/28,926.03 = 12,007.28/x
  3. Step 3: Cross multiply
    20,961.83x = 28,926.03 × 12,007.28
  4. Step 4: Simplify right side
    20,961.83x = 347,322,941.50
  5. Step 5: Solve for x
    x = 347,322,941.50/20,961.83
  6. Step 6: Final answer
    x = 16,569.30

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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.