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Finding the Fourth Proportional to 15,124, 20,868.06 and 8,835.16

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Solution

The fourth proportional to 15,124, 20,868.06 and 8,835.16 is: 12,190.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124 : 20,868.06 = 8,835.16 : x
  2. Step 2: Convert to fraction form
    15,124/20,868.06 = 8,835.16/x
  3. Step 3: Cross multiply
    15,124x = 20,868.06 × 8,835.16
  4. Step 4: Simplify right side
    15,124x = 184,372,648.99
  5. Step 5: Solve for x
    x = 184,372,648.99/15,124
  6. Step 6: Final answer
    x = 12,190.73

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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.