Home / 12,712.75-19,069.26-3,478.75

Finding the Fourth Proportional to 12,712.75, 19,069.26 and 3,478.75

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Solution

The fourth proportional to 12,712.75, 19,069.26 and 3,478.75 is: 5,218.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.75 : 19,069.26 = 3,478.75 : x
  2. Step 2: Convert to fraction form
    12,712.75/19,069.26 = 3,478.75/x
  3. Step 3: Cross multiply
    12,712.75x = 19,069.26 × 3,478.75
  4. Step 4: Simplify right side
    12,712.75x = 66,337,188.23
  5. Step 5: Solve for x
    x = 66,337,188.23/12,712.75
  6. Step 6: Final answer
    x = 5,218.16

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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.