Home / 11,919.74-17,878.77-3,154.46

Finding the Fourth Proportional to 11,919.74, 17,878.77 and 3,154.46

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Solution

The fourth proportional to 11,919.74, 17,878.77 and 3,154.46 is: 4,731.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.74 : 17,878.77 = 3,154.46 : x
  2. Step 2: Convert to fraction form
    11,919.74/17,878.77 = 3,154.46/x
  3. Step 3: Cross multiply
    11,919.74x = 17,878.77 × 3,154.46
  4. Step 4: Simplify right side
    11,919.74x = 56,397,864.81
  5. Step 5: Solve for x
    x = 56,397,864.81/11,919.74
  6. Step 6: Final answer
    x = 4,731.47

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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.