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Finding the Fourth Proportional to 12,158.76, 16,777.84 and 8,973.79

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Solution

The fourth proportional to 12,158.76, 16,777.84 and 8,973.79 is: 12,382.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.76 : 16,777.84 = 8,973.79 : x
  2. Step 2: Convert to fraction form
    12,158.76/16,777.84 = 8,973.79/x
  3. Step 3: Cross multiply
    12,158.76x = 16,777.84 × 8,973.79
  4. Step 4: Simplify right side
    12,158.76x = 150,560,812.81
  5. Step 5: Solve for x
    x = 150,560,812.81/12,158.76
  6. Step 6: Final answer
    x = 12,382.91

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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.