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Finding the Fourth Proportional to 11,681.79, 17,480.80 and 10,899.73

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Solution

The fourth proportional to 11,681.79, 17,480.80 and 10,899.73 is: 16,310.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.79 : 17,480.80 = 10,899.73 : x
  2. Step 2: Convert to fraction form
    11,681.79/17,480.80 = 10,899.73/x
  3. Step 3: Cross multiply
    11,681.79x = 17,480.80 × 10,899.73
  4. Step 4: Simplify right side
    11,681.79x = 190,536,000.18
  5. Step 5: Solve for x
    x = 190,536,000.18/11,681.79
  6. Step 6: Final answer
    x = 16,310.51

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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.