Home / 13,850.58-20,778.70-5,085.56

Finding the Fourth Proportional to 13,850.58, 20,778.70 and 5,085.56

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Solution

The fourth proportional to 13,850.58, 20,778.70 and 5,085.56 is: 7,629.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,850.58 : 20,778.70 = 5,085.56 : x
  2. Step 2: Convert to fraction form
    13,850.58/20,778.70 = 5,085.56/x
  3. Step 3: Cross multiply
    13,850.58x = 20,778.70 × 5,085.56
  4. Step 4: Simplify right side
    13,850.58x = 105,671,325.57
  5. Step 5: Solve for x
    x = 105,671,325.57/13,850.58
  6. Step 6: Final answer
    x = 7,629.38

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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.