Home / 12,156.51-16,760.37-8,168.88

Finding the Fourth Proportional to 12,156.51, 16,760.37 and 8,168.88

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Solution

The fourth proportional to 12,156.51, 16,760.37 and 8,168.88 is: 11,262.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.51 : 16,760.37 = 8,168.88 : x
  2. Step 2: Convert to fraction form
    12,156.51/16,760.37 = 8,168.88/x
  3. Step 3: Cross multiply
    12,156.51x = 16,760.37 × 8,168.88
  4. Step 4: Simplify right side
    12,156.51x = 136,913,451.29
  5. Step 5: Solve for x
    x = 136,913,451.29/12,156.51
  6. Step 6: Final answer
    x = 11,262.56

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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.