Home / 38,108.58-57,136.14-20,589.90

Finding the Fourth Proportional to 38,108.58, 57,136.14 and 20,589.90

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Solution

The fourth proportional to 38,108.58, 57,136.14 and 20,589.90 is: 30,870.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,108.58 : 57,136.14 = 20,589.90 : x
  2. Step 2: Convert to fraction form
    38,108.58/57,136.14 = 20,589.90/x
  3. Step 3: Cross multiply
    38,108.58x = 57,136.14 × 20,589.90
  4. Step 4: Simplify right side
    38,108.58x = 1,176,427,408.99
  5. Step 5: Solve for x
    x = 1,176,427,408.99/38,108.58
  6. Step 6: Final answer
    x = 30,870.41

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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.