Home / 13,916.86-20,751.16-12,371.38

Finding the Fourth Proportional to 13,916.86, 20,751.16 and 12,371.38

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Solution

The fourth proportional to 13,916.86, 20,751.16 and 12,371.38 is: 18,446.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,916.86 : 20,751.16 = 12,371.38 : x
  2. Step 2: Convert to fraction form
    13,916.86/20,751.16 = 12,371.38/x
  3. Step 3: Cross multiply
    13,916.86x = 20,751.16 × 12,371.38
  4. Step 4: Simplify right side
    13,916.86x = 256,720,485.80
  5. Step 5: Solve for x
    x = 256,720,485.80/13,916.86
  6. Step 6: Final answer
    x = 18,446.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.