Home / 20,270.22-30,408.57-7,123.02

Finding the Fourth Proportional to 20,270.22, 30,408.57 and 7,123.02

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Solution

The fourth proportional to 20,270.22, 30,408.57 and 7,123.02 is: 10,685.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.22 : 30,408.57 = 7,123.02 : x
  2. Step 2: Convert to fraction form
    20,270.22/30,408.57 = 7,123.02/x
  3. Step 3: Cross multiply
    20,270.22x = 30,408.57 × 7,123.02
  4. Step 4: Simplify right side
    20,270.22x = 216,600,852.28
  5. Step 5: Solve for x
    x = 216,600,852.28/20,270.22
  6. Step 6: Final answer
    x = 10,685.67

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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.