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Finding the Fourth Proportional to 15,864.84, 23,811.30 and 8,078.04

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Solution

The fourth proportional to 15,864.84, 23,811.30 and 8,078.04 is: 12,124.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,864.84 : 23,811.30 = 8,078.04 : x
  2. Step 2: Convert to fraction form
    15,864.84/23,811.30 = 8,078.04/x
  3. Step 3: Cross multiply
    15,864.84x = 23,811.30 × 8,078.04
  4. Step 4: Simplify right side
    15,864.84x = 192,348,633.85
  5. Step 5: Solve for x
    x = 192,348,633.85/15,864.84
  6. Step 6: Final answer
    x = 12,124.21

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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.