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Finding the Fourth Proportional to 15,113.48, 20,857.94 and 8,827.88

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Solution

The fourth proportional to 15,113.48, 20,857.94 and 8,827.88 is: 12,183.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,113.48 : 20,857.94 = 8,827.88 : x
  2. Step 2: Convert to fraction form
    15,113.48/20,857.94 = 8,827.88/x
  3. Step 3: Cross multiply
    15,113.48x = 20,857.94 × 8,827.88
  4. Step 4: Simplify right side
    15,113.48x = 184,131,391.37
  5. Step 5: Solve for x
    x = 184,131,391.37/15,113.48
  6. Step 6: Final answer
    x = 12,183.26

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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.