Home / 13,315.20-19,956.60-5,911.80

Finding the Fourth Proportional to 13,315.20, 19,956.60 and 5,911.80

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Solution

The fourth proportional to 13,315.20, 19,956.60 and 5,911.80 is: 8,860.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.20 : 19,956.60 = 5,911.80 : x
  2. Step 2: Convert to fraction form
    13,315.20/19,956.60 = 5,911.80/x
  3. Step 3: Cross multiply
    13,315.20x = 19,956.60 × 5,911.80
  4. Step 4: Simplify right side
    13,315.20x = 117,979,427.88
  5. Step 5: Solve for x
    x = 117,979,427.88/13,315.20
  6. Step 6: Final answer
    x = 8,860.51

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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.