Home / 13,815.08-20,707.13-5,492.86

Finding the Fourth Proportional to 13,815.08, 20,707.13 and 5,492.86

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Solution

The fourth proportional to 13,815.08, 20,707.13 and 5,492.86 is: 8,233.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.08 : 20,707.13 = 5,492.86 : x
  2. Step 2: Convert to fraction form
    13,815.08/20,707.13 = 5,492.86/x
  3. Step 3: Cross multiply
    13,815.08x = 20,707.13 × 5,492.86
  4. Step 4: Simplify right side
    13,815.08x = 113,741,436.81
  5. Step 5: Solve for x
    x = 113,741,436.81/13,815.08
  6. Step 6: Final answer
    x = 8,233.14

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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.