Home / 20,965.41-28,932.26-11,533.91

Finding the Fourth Proportional to 20,965.41, 28,932.26 and 11,533.91

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Solution

The fourth proportional to 20,965.41, 28,932.26 and 11,533.91 is: 15,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.41 : 28,932.26 = 11,533.91 : x
  2. Step 2: Convert to fraction form
    20,965.41/28,932.26 = 11,533.91/x
  3. Step 3: Cross multiply
    20,965.41x = 28,932.26 × 11,533.91
  4. Step 4: Simplify right side
    20,965.41x = 333,701,880.61
  5. Step 5: Solve for x
    x = 333,701,880.61/20,965.41
  6. Step 6: Final answer
    x = 15,916.78

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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.