Home / 13,222.88-19,820.39-4,335.90

Finding the Fourth Proportional to 13,222.88, 19,820.39 and 4,335.90

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Solution

The fourth proportional to 13,222.88, 19,820.39 and 4,335.90 is: 6,499.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.88 : 19,820.39 = 4,335.90 : x
  2. Step 2: Convert to fraction form
    13,222.88/19,820.39 = 4,335.90/x
  3. Step 3: Cross multiply
    13,222.88x = 19,820.39 × 4,335.90
  4. Step 4: Simplify right side
    13,222.88x = 85,939,129.90
  5. Step 5: Solve for x
    x = 85,939,129.90/13,222.88
  6. Step 6: Final answer
    x = 6,499.27

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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.