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Finding the Fourth Proportional to 13,131.52, 18,113.52 and 8,414.08

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Solution

The fourth proportional to 13,131.52, 18,113.52 and 8,414.08 is: 11,606.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.52 : 18,113.52 = 8,414.08 : x
  2. Step 2: Convert to fraction form
    13,131.52/18,113.52 = 8,414.08/x
  3. Step 3: Cross multiply
    13,131.52x = 18,113.52 × 8,414.08
  4. Step 4: Simplify right side
    13,131.52x = 152,408,606.36
  5. Step 5: Solve for x
    x = 152,408,606.36/13,131.52
  6. Step 6: Final answer
    x = 11,606.32

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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.