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Finding the Fourth Proportional to 21,068.52, 29,073.96 and 11,636.88

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Solution

The fourth proportional to 21,068.52, 29,073.96 and 11,636.88 is: 16,058.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.52 : 29,073.96 = 11,636.88 : x
  2. Step 2: Convert to fraction form
    21,068.52/29,073.96 = 11,636.88/x
  3. Step 3: Cross multiply
    21,068.52x = 29,073.96 × 11,636.88
  4. Step 4: Simplify right side
    21,068.52x = 338,330,183.64
  5. Step 5: Solve for x
    x = 338,330,183.64/21,068.52
  6. Step 6: Final answer
    x = 16,058.56

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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.