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Finding the Fourth Proportional to 12,335.76, 18,487.08 and 7,950.96

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Solution

The fourth proportional to 12,335.76, 18,487.08 and 7,950.96 is: 11,915.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,335.76 : 18,487.08 = 7,950.96 : x
  2. Step 2: Convert to fraction form
    12,335.76/18,487.08 = 7,950.96/x
  3. Step 3: Cross multiply
    12,335.76x = 18,487.08 × 7,950.96
  4. Step 4: Simplify right side
    12,335.76x = 146,990,033.60
  5. Step 5: Solve for x
    x = 146,990,033.60/12,335.76
  6. Step 6: Final answer
    x = 11,915.77

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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.