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Finding the Fourth Proportional to 12,884.40, 19,326.60 and 11,523.60

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Solution

The fourth proportional to 12,884.40, 19,326.60 and 11,523.60 is: 17,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,884.40 : 19,326.60 = 11,523.60 : x
  2. Step 2: Convert to fraction form
    12,884.40/19,326.60 = 11,523.60/x
  3. Step 3: Cross multiply
    12,884.40x = 19,326.60 × 11,523.60
  4. Step 4: Simplify right side
    12,884.40x = 222,712,007.76
  5. Step 5: Solve for x
    x = 222,712,007.76/12,884.40
  6. Step 6: Final answer
    x = 17,285.40

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1.5x scale

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.