Home / 11,911.65-17,868.35-3,146.50

Finding the Fourth Proportional to 11,911.65, 17,868.35 and 3,146.50

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Solution

The fourth proportional to 11,911.65, 17,868.35 and 3,146.50 is: 4,719.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,911.65 : 17,868.35 = 3,146.50 : x
  2. Step 2: Convert to fraction form
    11,911.65/17,868.35 = 3,146.50/x
  3. Step 3: Cross multiply
    11,911.65x = 17,868.35 × 3,146.50
  4. Step 4: Simplify right side
    11,911.65x = 56,222,763.28
  5. Step 5: Solve for x
    x = 56,222,763.28/11,911.65
  6. Step 6: Final answer
    x = 4,719.98

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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.