Home / 11,916.78-17,875.17-4,121.34

Finding the Fourth Proportional to 11,916.78, 17,875.17 and 4,121.34

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Solution

The fourth proportional to 11,916.78, 17,875.17 and 4,121.34 is: 6,182.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.78 : 17,875.17 = 4,121.34 : x
  2. Step 2: Convert to fraction form
    11,916.78/17,875.17 = 4,121.34/x
  3. Step 3: Cross multiply
    11,916.78x = 17,875.17 × 4,121.34
  4. Step 4: Simplify right side
    11,916.78x = 73,669,653.13
  5. Step 5: Solve for x
    x = 73,669,653.13/11,916.78
  6. Step 6: Final answer
    x = 6,182.01

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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.