Home / 12,972.55-19,456.89-3,611.59

Finding the Fourth Proportional to 12,972.55, 19,456.89 and 3,611.59

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Solution

The fourth proportional to 12,972.55, 19,456.89 and 3,611.59 is: 5,416.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.55 : 19,456.89 = 3,611.59 : x
  2. Step 2: Convert to fraction form
    12,972.55/19,456.89 = 3,611.59/x
  3. Step 3: Cross multiply
    12,972.55x = 19,456.89 × 3,611.59
  4. Step 4: Simplify right side
    12,972.55x = 70,270,309.36
  5. Step 5: Solve for x
    x = 70,270,309.36/12,972.55
  6. Step 6: Final answer
    x = 5,416.85

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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.