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Finding the Fourth Proportional to 13,159.92, 18,158.94 and 8,450.58

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Solution

The fourth proportional to 13,159.92, 18,158.94 and 8,450.58 is: 11,660.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.92 : 18,158.94 = 8,450.58 : x
  2. Step 2: Convert to fraction form
    13,159.92/18,158.94 = 8,450.58/x
  3. Step 3: Cross multiply
    13,159.92x = 18,158.94 × 8,450.58
  4. Step 4: Simplify right side
    13,159.92x = 153,453,575.19
  5. Step 5: Solve for x
    x = 153,453,575.19/13,159.92
  6. Step 6: Final answer
    x = 11,660.68

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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.