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Finding the Fourth Proportional to 12,188.93, 18,252.18 and 8,435.52

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Solution

The fourth proportional to 12,188.93, 18,252.18 and 8,435.52 is: 12,631.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.93 : 18,252.18 = 8,435.52 : x
  2. Step 2: Convert to fraction form
    12,188.93/18,252.18 = 8,435.52/x
  3. Step 3: Cross multiply
    12,188.93x = 18,252.18 × 8,435.52
  4. Step 4: Simplify right side
    12,188.93x = 153,966,592.62
  5. Step 5: Solve for x
    x = 153,966,592.62/12,188.93
  6. Step 6: Final answer
    x = 12,631.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.