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Finding the Fourth Proportional to 15,044.91, 20,762.20 and 8,238.81

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Solution

The fourth proportional to 15,044.91, 20,762.20 and 8,238.81 is: 11,369.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,044.91 : 20,762.20 = 8,238.81 : x
  2. Step 2: Convert to fraction form
    15,044.91/20,762.20 = 8,238.81/x
  3. Step 3: Cross multiply
    15,044.91x = 20,762.20 × 8,238.81
  4. Step 4: Simplify right side
    15,044.91x = 171,055,820.98
  5. Step 5: Solve for x
    x = 171,055,820.98/15,044.91
  6. Step 6: Final answer
    x = 11,369.68

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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.