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Finding the Fourth Proportional to 18,645.51, 27,968.26 and 15,351.68

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Solution

The fourth proportional to 18,645.51, 27,968.26 and 15,351.68 is: 23,027.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.51 : 27,968.26 = 15,351.68 : x
  2. Step 2: Convert to fraction form
    18,645.51/27,968.26 = 15,351.68/x
  3. Step 3: Cross multiply
    18,645.51x = 27,968.26 × 15,351.68
  4. Step 4: Simplify right side
    18,645.51x = 429,359,841.85
  5. Step 5: Solve for x
    x = 429,359,841.85/18,645.51
  6. Step 6: Final answer
    x = 23,027.52

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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.