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Finding the Fourth Proportional to 11,713.80, 17,420.04 and 11,344.72

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Solution

The fourth proportional to 11,713.80, 17,420.04 and 11,344.72 is: 16,871.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,713.80 : 17,420.04 = 11,344.72 : x
  2. Step 2: Convert to fraction form
    11,713.80/17,420.04 = 11,344.72/x
  3. Step 3: Cross multiply
    11,713.80x = 17,420.04 × 11,344.72
  4. Step 4: Simplify right side
    11,713.80x = 197,625,476.19
  5. Step 5: Solve for x
    x = 197,625,476.19/11,713.80
  6. Step 6: Final answer
    x = 16,871.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.