Home / 20,428.13-30,641.37-5,636.67

Finding the Fourth Proportional to 20,428.13, 30,641.37 and 5,636.67

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Solution

The fourth proportional to 20,428.13, 30,641.37 and 5,636.67 is: 8,454.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.13 : 30,641.37 = 5,636.67 : x
  2. Step 2: Convert to fraction form
    20,428.13/30,641.37 = 5,636.67/x
  3. Step 3: Cross multiply
    20,428.13x = 30,641.37 × 5,636.67
  4. Step 4: Simplify right side
    20,428.13x = 172,715,352.73
  5. Step 5: Solve for x
    x = 172,715,352.73/20,428.13
  6. Step 6: Final answer
    x = 8,454.78

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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.