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Finding the Fourth Proportional to 20,265.59, 27,961.58 and 11,880.47

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Solution

The fourth proportional to 20,265.59, 27,961.58 and 11,880.47 is: 16,392.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.59 : 27,961.58 = 11,880.47 : x
  2. Step 2: Convert to fraction form
    20,265.59/27,961.58 = 11,880.47/x
  3. Step 3: Cross multiply
    20,265.59x = 27,961.58 × 11,880.47
  4. Step 4: Simplify right side
    20,265.59x = 332,196,513.13
  5. Step 5: Solve for x
    x = 332,196,513.13/20,265.59
  6. Step 6: Final answer
    x = 16,392.15

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1.5x scale

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.