Home / 30,255.14-41,708.81-20,179.90

Finding the Fourth Proportional to 30,255.14, 41,708.81 and 20,179.90

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Solution

The fourth proportional to 30,255.14, 41,708.81 and 20,179.90 is: 27,819.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,255.14 : 41,708.81 = 20,179.90 : x
  2. Step 2: Convert to fraction form
    30,255.14/41,708.81 = 20,179.90/x
  3. Step 3: Cross multiply
    30,255.14x = 41,708.81 × 20,179.90
  4. Step 4: Simplify right side
    30,255.14x = 841,679,409.75
  5. Step 5: Solve for x
    x = 841,679,409.75/30,255.14
  6. Step 6: Final answer
    x = 27,819.39

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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.