Home / 13,801.25-19,048.20-8,135.66

Finding the Fourth Proportional to 13,801.25, 19,048.20 and 8,135.66

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Solution

The fourth proportional to 13,801.25, 19,048.20 and 8,135.66 is: 11,228.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801.25 : 19,048.20 = 8,135.66 : x
  2. Step 2: Convert to fraction form
    13,801.25/19,048.20 = 8,135.66/x
  3. Step 3: Cross multiply
    13,801.25x = 19,048.20 × 8,135.66
  4. Step 4: Simplify right side
    13,801.25x = 154,969,583.57
  5. Step 5: Solve for x
    x = 154,969,583.57/13,801.25
  6. Step 6: Final answer
    x = 11,228.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.