Home / 14,138.70-19,511.19-7,851.30

Finding the Fourth Proportional to 14,138.70, 19,511.19 and 7,851.30

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Solution

The fourth proportional to 14,138.70, 19,511.19 and 7,851.30 is: 10,834.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.70 : 19,511.19 = 7,851.30 : x
  2. Step 2: Convert to fraction form
    14,138.70/19,511.19 = 7,851.30/x
  3. Step 3: Cross multiply
    14,138.70x = 19,511.19 × 7,851.30
  4. Step 4: Simplify right side
    14,138.70x = 153,188,206.05
  5. Step 5: Solve for x
    x = 153,188,206.05/14,138.70
  6. Step 6: Final answer
    x = 10,834.67

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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.