Home / 13,628.78-20,451.05-5,730.67

Finding the Fourth Proportional to 13,628.78, 20,451.05 and 5,730.67

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Solution

The fourth proportional to 13,628.78, 20,451.05 and 5,730.67 is: 8,599.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.78 : 20,451.05 = 5,730.67 : x
  2. Step 2: Convert to fraction form
    13,628.78/20,451.05 = 5,730.67/x
  3. Step 3: Cross multiply
    13,628.78x = 20,451.05 × 5,730.67
  4. Step 4: Simplify right side
    13,628.78x = 117,198,218.70
  5. Step 5: Solve for x
    x = 117,198,218.70/13,628.78
  6. Step 6: Final answer
    x = 8,599.32

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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.