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Finding the Fourth Proportional to 18,658.23, 27,969.19 and 11,975.88

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Solution

The fourth proportional to 18,658.23, 27,969.19 and 11,975.88 is: 17,952.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.23 : 27,969.19 = 11,975.88 : x
  2. Step 2: Convert to fraction form
    18,658.23/27,969.19 = 11,975.88/x
  3. Step 3: Cross multiply
    18,658.23x = 27,969.19 × 11,975.88
  4. Step 4: Simplify right side
    18,658.23x = 334,955,663.14
  5. Step 5: Solve for x
    x = 334,955,663.14/18,658.23
  6. Step 6: Final answer
    x = 17,952.17

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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.