Home / 13,916.79-20,861.10-5,595.21

Finding the Fourth Proportional to 13,916.79, 20,861.10 and 5,595.21

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Solution

The fourth proportional to 13,916.79, 20,861.10 and 5,595.21 is: 8,387.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,916.79 : 20,861.10 = 5,595.21 : x
  2. Step 2: Convert to fraction form
    13,916.79/20,861.10 = 5,595.21/x
  3. Step 3: Cross multiply
    13,916.79x = 20,861.10 × 5,595.21
  4. Step 4: Simplify right side
    13,916.79x = 116,722,235.33
  5. Step 5: Solve for x
    x = 116,722,235.33/13,916.79
  6. Step 6: Final answer
    x = 8,387.15

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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.