Home / 11,916.22-17,875.32-4,520.68

Finding the Fourth Proportional to 11,916.22, 17,875.32 and 4,520.68

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Solution

The fourth proportional to 11,916.22, 17,875.32 and 4,520.68 is: 6,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.22 : 17,875.32 = 4,520.68 : x
  2. Step 2: Convert to fraction form
    11,916.22/17,875.32 = 4,520.68/x
  3. Step 3: Cross multiply
    11,916.22x = 17,875.32 × 4,520.68
  4. Step 4: Simplify right side
    11,916.22x = 80,808,601.62
  5. Step 5: Solve for x
    x = 80,808,601.62/11,916.22
  6. Step 6: Final answer
    x = 6,781.40

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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.