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Finding the Fourth Proportional to 19,663.70, 27,136.23 and 10,711.22

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Solution

The fourth proportional to 19,663.70, 27,136.23 and 10,711.22 is: 14,781.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,663.70 : 27,136.23 = 10,711.22 : x
  2. Step 2: Convert to fraction form
    19,663.70/27,136.23 = 10,711.22/x
  3. Step 3: Cross multiply
    19,663.70x = 27,136.23 × 10,711.22
  4. Step 4: Simplify right side
    19,663.70x = 290,661,993.82
  5. Step 5: Solve for x
    x = 290,661,993.82/19,663.70
  6. Step 6: Final answer
    x = 14,781.65

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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.