Home / 13,818.08-20,723.32-3,820.45

Finding the Fourth Proportional to 13,818.08, 20,723.32 and 3,820.45

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Solution

The fourth proportional to 13,818.08, 20,723.32 and 3,820.45 is: 5,729.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.08 : 20,723.32 = 3,820.45 : x
  2. Step 2: Convert to fraction form
    13,818.08/20,723.32 = 3,820.45/x
  3. Step 3: Cross multiply
    13,818.08x = 20,723.32 × 3,820.45
  4. Step 4: Simplify right side
    13,818.08x = 79,172,407.89
  5. Step 5: Solve for x
    x = 79,172,407.89/13,818.08
  6. Step 6: Final answer
    x = 5,729.62

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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.