Home / 11,913.12-17,878.80-4,992.48

Finding the Fourth Proportional to 11,913.12, 17,878.80 and 4,992.48

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Solution

The fourth proportional to 11,913.12, 17,878.80 and 4,992.48 is: 7,492.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,913.12 : 17,878.80 = 4,992.48 : x
  2. Step 2: Convert to fraction form
    11,913.12/17,878.80 = 4,992.48/x
  3. Step 3: Cross multiply
    11,913.12x = 17,878.80 × 4,992.48
  4. Step 4: Simplify right side
    11,913.12x = 89,259,551.42
  5. Step 5: Solve for x
    x = 89,259,551.42/11,913.12
  6. Step 6: Final answer
    x = 7,492.54

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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.