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Finding the Fourth Proportional to 19,885.97, 29,827.39 and 11,560.68

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Solution

The fourth proportional to 19,885.97, 29,827.39 and 11,560.68 is: 17,340.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,885.97 : 29,827.39 = 11,560.68 : x
  2. Step 2: Convert to fraction form
    19,885.97/29,827.39 = 11,560.68/x
  3. Step 3: Cross multiply
    19,885.97x = 29,827.39 × 11,560.68
  4. Step 4: Simplify right side
    19,885.97x = 344,824,911.03
  5. Step 5: Solve for x
    x = 344,824,911.03/19,885.97
  6. Step 6: Final answer
    x = 17,340.11

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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.