Home / 19,960.80-29,916.90-8,855.70

Finding the Fourth Proportional to 19,960.80, 29,916.90 and 8,855.70

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Solution

The fourth proportional to 19,960.80, 29,916.90 and 8,855.70 is: 13,272.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,960.80 : 29,916.90 = 8,855.70 : x
  2. Step 2: Convert to fraction form
    19,960.80/29,916.90 = 8,855.70/x
  3. Step 3: Cross multiply
    19,960.80x = 29,916.90 × 8,855.70
  4. Step 4: Simplify right side
    19,960.80x = 264,935,091.33
  5. Step 5: Solve for x
    x = 264,935,091.33/19,960.80
  6. Step 6: Final answer
    x = 13,272.77

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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.