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Finding the Fourth Proportional to 14,823.19, 20,455.98 and 8,108.79

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Solution

The fourth proportional to 14,823.19, 20,455.98 and 8,108.79 is: 11,190.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,823.19 : 20,455.98 = 8,108.79 : x
  2. Step 2: Convert to fraction form
    14,823.19/20,455.98 = 8,108.79/x
  3. Step 3: Cross multiply
    14,823.19x = 20,455.98 × 8,108.79
  4. Step 4: Simplify right side
    14,823.19x = 165,873,143.78
  5. Step 5: Solve for x
    x = 165,873,143.78/14,823.19
  6. Step 6: Final answer
    x = 11,190.11

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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.