Home / 13,536.80-20,307.36-5,745.68

Finding the Fourth Proportional to 13,536.80, 20,307.36 and 5,745.68

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Solution

The fourth proportional to 13,536.80, 20,307.36 and 5,745.68 is: 8,619.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,536.80 : 20,307.36 = 5,745.68 : x
  2. Step 2: Convert to fraction form
    13,536.80/20,307.36 = 5,745.68/x
  3. Step 3: Cross multiply
    13,536.80x = 20,307.36 × 5,745.68
  4. Step 4: Simplify right side
    13,536.80x = 116,679,592.20
  5. Step 5: Solve for x
    x = 116,679,592.20/13,536.80
  6. Step 6: Final answer
    x = 8,619.44

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1.5x scale

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.