Home / 13,222.89-19,833.80-5,431.50

Finding the Fourth Proportional to 13,222.89, 19,833.80 and 5,431.50

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Solution

The fourth proportional to 13,222.89, 19,833.80 and 5,431.50 is: 8,147.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.89 : 19,833.80 = 5,431.50 : x
  2. Step 2: Convert to fraction form
    13,222.89/19,833.80 = 5,431.50/x
  3. Step 3: Cross multiply
    13,222.89x = 19,833.80 × 5,431.50
  4. Step 4: Simplify right side
    13,222.89x = 107,727,257.54
  5. Step 5: Solve for x
    x = 107,727,257.54/13,222.89
  6. Step 6: Final answer
    x = 8,147.03

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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.