Home / 11,872.51-17,818.89-6,612.78

Finding the Fourth Proportional to 11,872.51, 17,818.89 and 6,612.78

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Solution

The fourth proportional to 11,872.51, 17,818.89 and 6,612.78 is: 9,924.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,872.51 : 17,818.89 = 6,612.78 : x
  2. Step 2: Convert to fraction form
    11,872.51/17,818.89 = 6,612.78/x
  3. Step 3: Cross multiply
    11,872.51x = 17,818.89 × 6,612.78
  4. Step 4: Simplify right side
    11,872.51x = 117,832,399.41
  5. Step 5: Solve for x
    x = 117,832,399.41/11,872.51
  6. Step 6: Final answer
    x = 9,924.81

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1.5x scale

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.