Home / 13,579.20-20,369.28-4,344

Finding the Fourth Proportional to 13,579.20, 20,369.28 and 4,344

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Solution

The fourth proportional to 13,579.20, 20,369.28 and 4,344 is: 6,516.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.20 : 20,369.28 = 4,344 : x
  2. Step 2: Convert to fraction form
    13,579.20/20,369.28 = 4,344/x
  3. Step 3: Cross multiply
    13,579.20x = 20,369.28 × 4,344
  4. Step 4: Simplify right side
    13,579.20x = 88,484,152.32
  5. Step 5: Solve for x
    x = 88,484,152.32/13,579.20
  6. Step 6: Final answer
    x = 6,516.15

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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.