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Finding the Fourth Proportional to 12,159.79, 16,794.35 and 8,173.99

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Solution

The fourth proportional to 12,159.79, 16,794.35 and 8,173.99 is: 11,289.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.79 : 16,794.35 = 8,173.99 : x
  2. Step 2: Convert to fraction form
    12,159.79/16,794.35 = 8,173.99/x
  3. Step 3: Cross multiply
    12,159.79x = 16,794.35 × 8,173.99
  4. Step 4: Simplify right side
    12,159.79x = 137,276,848.96
  5. Step 5: Solve for x
    x = 137,276,848.96/12,159.79
  6. Step 6: Final answer
    x = 11,289.41

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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.