Home / 18,636.87-25,720.70-13,912.95

Finding the Fourth Proportional to 18,636.87, 25,720.70 and 13,912.95

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Solution

The fourth proportional to 18,636.87, 25,720.70 and 13,912.95 is: 19,201.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.87 : 25,720.70 = 13,912.95 : x
  2. Step 2: Convert to fraction form
    18,636.87/25,720.70 = 13,912.95/x
  3. Step 3: Cross multiply
    18,636.87x = 25,720.70 × 13,912.95
  4. Step 4: Simplify right side
    18,636.87x = 357,850,813.07
  5. Step 5: Solve for x
    x = 357,850,813.07/18,636.87
  6. Step 6: Final answer
    x = 19,201.23

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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.