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Finding the Fourth Proportional to 18,603.69, 27,771.71 and 15,942.57

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Solution

The fourth proportional to 18,603.69, 27,771.71 and 15,942.57 is: 23,799.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.69 : 27,771.71 = 15,942.57 : x
  2. Step 2: Convert to fraction form
    18,603.69/27,771.71 = 15,942.57/x
  3. Step 3: Cross multiply
    18,603.69x = 27,771.71 × 15,942.57
  4. Step 4: Simplify right side
    18,603.69x = 442,752,430.69
  5. Step 5: Solve for x
    x = 442,752,430.69/18,603.69
  6. Step 6: Final answer
    x = 23,799.17

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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.