Home / 13,020.12-19,531.80-4,251.96

Finding the Fourth Proportional to 13,020.12, 19,531.80 and 4,251.96

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Solution

The fourth proportional to 13,020.12, 19,531.80 and 4,251.96 is: 6,378.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.12 : 19,531.80 = 4,251.96 : x
  2. Step 2: Convert to fraction form
    13,020.12/19,531.80 = 4,251.96/x
  3. Step 3: Cross multiply
    13,020.12x = 19,531.80 × 4,251.96
  4. Step 4: Simplify right side
    13,020.12x = 83,048,432.33
  5. Step 5: Solve for x
    x = 83,048,432.33/13,020.12
  6. Step 6: Final answer
    x = 6,378.47

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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.