Home / 12,986.25-19,479.53-3,625.70

Finding the Fourth Proportional to 12,986.25, 19,479.53 and 3,625.70

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Solution

The fourth proportional to 12,986.25, 19,479.53 and 3,625.70 is: 5,438.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.25 : 19,479.53 = 3,625.70 : x
  2. Step 2: Convert to fraction form
    12,986.25/19,479.53 = 3,625.70/x
  3. Step 3: Cross multiply
    12,986.25x = 19,479.53 × 3,625.70
  4. Step 4: Simplify right side
    12,986.25x = 70,626,816.39
  5. Step 5: Solve for x
    x = 70,626,816.39/12,986.25
  6. Step 6: Final answer
    x = 5,438.58

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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.