Home / 13,877.71-20,815.21-7,635.67

Finding the Fourth Proportional to 13,877.71, 20,815.21 and 7,635.67

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Solution

The fourth proportional to 13,877.71, 20,815.21 and 7,635.67 is: 11,452.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,877.71 : 20,815.21 = 7,635.67 : x
  2. Step 2: Convert to fraction form
    13,877.71/20,815.21 = 7,635.67/x
  3. Step 3: Cross multiply
    13,877.71x = 20,815.21 × 7,635.67
  4. Step 4: Simplify right side
    13,877.71x = 158,938,074.54
  5. Step 5: Solve for x
    x = 158,938,074.54/13,877.71
  6. Step 6: Final answer
    x = 11,452.76

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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.