Home / 18,665.25-25,759.26-12,378.84

Finding the Fourth Proportional to 18,665.25, 25,759.26 and 12,378.84

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Solution

The fourth proportional to 18,665.25, 25,759.26 and 12,378.84 is: 17,083.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.25 : 25,759.26 = 12,378.84 : x
  2. Step 2: Convert to fraction form
    18,665.25/25,759.26 = 12,378.84/x
  3. Step 3: Cross multiply
    18,665.25x = 25,759.26 × 12,378.84
  4. Step 4: Simplify right side
    18,665.25x = 318,869,758.06
  5. Step 5: Solve for x
    x = 318,869,758.06/18,665.25
  6. Step 6: Final answer
    x = 17,083.60

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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.