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Finding the Fourth Proportional to 18,371.69, 27,569.79 and 11,802.59

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Solution

The fourth proportional to 18,371.69, 27,569.79 and 11,802.59 is: 17,711.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,371.69 : 27,569.79 = 11,802.59 : x
  2. Step 2: Convert to fraction form
    18,371.69/27,569.79 = 11,802.59/x
  3. Step 3: Cross multiply
    18,371.69x = 27,569.79 × 11,802.59
  4. Step 4: Simplify right side
    18,371.69x = 325,394,927.76
  5. Step 5: Solve for x
    x = 325,394,927.76/18,371.69
  6. Step 6: Final answer
    x = 17,711.76

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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.