Home / 13,213.89-19,820.79-3,353.13

Finding the Fourth Proportional to 13,213.89, 19,820.79 and 3,353.13

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Solution

The fourth proportional to 13,213.89, 19,820.79 and 3,353.13 is: 5,029.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.89 : 19,820.79 = 3,353.13 : x
  2. Step 2: Convert to fraction form
    13,213.89/19,820.79 = 3,353.13/x
  3. Step 3: Cross multiply
    13,213.89x = 19,820.79 × 3,353.13
  4. Step 4: Simplify right side
    13,213.89x = 66,461,685.57
  5. Step 5: Solve for x
    x = 66,461,685.57/13,213.89
  6. Step 6: Final answer
    x = 5,029.68

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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.