Home / 20,619.98-28,448.14-11,667.39

Finding the Fourth Proportional to 20,619.98, 28,448.14 and 11,667.39

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Solution

The fourth proportional to 20,619.98, 28,448.14 and 11,667.39 is: 16,096.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.98 : 28,448.14 = 11,667.39 : x
  2. Step 2: Convert to fraction form
    20,619.98/28,448.14 = 11,667.39/x
  3. Step 3: Cross multiply
    20,619.98x = 28,448.14 × 11,667.39
  4. Step 4: Simplify right side
    20,619.98x = 331,915,401.91
  5. Step 5: Solve for x
    x = 331,915,401.91/20,619.98
  6. Step 6: Final answer
    x = 16,096.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.