Home / 20,273.18-30,408.27-7,125.68

Finding the Fourth Proportional to 20,273.18, 30,408.27 and 7,125.68

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Solution

The fourth proportional to 20,273.18, 30,408.27 and 7,125.68 is: 10,687.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.18 : 30,408.27 = 7,125.68 : x
  2. Step 2: Convert to fraction form
    20,273.18/30,408.27 = 7,125.68/x
  3. Step 3: Cross multiply
    20,273.18x = 30,408.27 × 7,125.68
  4. Step 4: Simplify right side
    20,273.18x = 216,679,601.37
  5. Step 5: Solve for x
    x = 216,679,601.37/20,273.18
  6. Step 6: Final answer
    x = 10,687.99

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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.