Home / 18,789.75-25,922.70-12,419.37

Finding the Fourth Proportional to 18,789.75, 25,922.70 and 12,419.37

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Solution

The fourth proportional to 18,789.75, 25,922.70 and 12,419.37 is: 17,134.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.75 : 25,922.70 = 12,419.37 : x
  2. Step 2: Convert to fraction form
    18,789.75/25,922.70 = 12,419.37/x
  3. Step 3: Cross multiply
    18,789.75x = 25,922.70 × 12,419.37
  4. Step 4: Simplify right side
    18,789.75x = 321,943,602.70
  5. Step 5: Solve for x
    x = 321,943,602.70/18,789.75
  6. Step 6: Final answer
    x = 17,134.00

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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.