Home / 11,921.87-17,881.76-4,526.38

Finding the Fourth Proportional to 11,921.87, 17,881.76 and 4,526.38

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Solution

The fourth proportional to 11,921.87, 17,881.76 and 4,526.38 is: 6,789.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.87 : 17,881.76 = 4,526.38 : x
  2. Step 2: Convert to fraction form
    11,921.87/17,881.76 = 4,526.38/x
  3. Step 3: Cross multiply
    11,921.87x = 17,881.76 × 4,526.38
  4. Step 4: Simplify right side
    11,921.87x = 80,939,674.50
  5. Step 5: Solve for x
    x = 80,939,674.50/11,921.87
  6. Step 6: Final answer
    x = 6,789.18

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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.