Home / 19,611.60-29,422.26-7,138.41

Finding the Fourth Proportional to 19,611.60, 29,422.26 and 7,138.41

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Solution

The fourth proportional to 19,611.60, 29,422.26 and 7,138.41 is: 10,709.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,611.60 : 29,422.26 = 7,138.41 : x
  2. Step 2: Convert to fraction form
    19,611.60/29,422.26 = 7,138.41/x
  3. Step 3: Cross multiply
    19,611.60x = 29,422.26 × 7,138.41
  4. Step 4: Simplify right side
    19,611.60x = 210,028,155.01
  5. Step 5: Solve for x
    x = 210,028,155.01/19,611.60
  6. Step 6: Final answer
    x = 10,709.38

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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.