Home / 13,021.22-19,539.12-5,235.50

Finding the Fourth Proportional to 13,021.22, 19,539.12 and 5,235.50

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Solution

The fourth proportional to 13,021.22, 19,539.12 and 5,235.50 is: 7,856.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.22 : 19,539.12 = 5,235.50 : x
  2. Step 2: Convert to fraction form
    13,021.22/19,539.12 = 5,235.50/x
  3. Step 3: Cross multiply
    13,021.22x = 19,539.12 × 5,235.50
  4. Step 4: Simplify right side
    13,021.22x = 102,297,062.76
  5. Step 5: Solve for x
    x = 102,297,062.76/13,021.22
  6. Step 6: Final answer
    x = 7,856.18

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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.