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Finding the Fourth Proportional to 18,603.90, 27,866.73 and 15,104.70

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Solution

The fourth proportional to 18,603.90, 27,866.73 and 15,104.70 is: 22,625.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.90 : 27,866.73 = 15,104.70 : x
  2. Step 2: Convert to fraction form
    18,603.90/27,866.73 = 15,104.70/x
  3. Step 3: Cross multiply
    18,603.90x = 27,866.73 × 15,104.70
  4. Step 4: Simplify right side
    18,603.90x = 420,918,596.63
  5. Step 5: Solve for x
    x = 420,918,596.63/18,603.90
  6. Step 6: Final answer
    x = 22,625.29

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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.