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Finding the Fourth Proportional to 15,108, 20,849.04 and 8,484

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Solution

The fourth proportional to 15,108, 20,849.04 and 8,484 is: 11,707.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,108 : 20,849.04 = 8,484 : x
  2. Step 2: Convert to fraction form
    15,108/20,849.04 = 8,484/x
  3. Step 3: Cross multiply
    15,108x = 20,849.04 × 8,484
  4. Step 4: Simplify right side
    15,108x = 176,883,255.36
  5. Step 5: Solve for x
    x = 176,883,255.36/15,108
  6. Step 6: Final answer
    x = 11,707.92

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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.