Home / 12,809.91-19,190.16-7,246.23

Finding the Fourth Proportional to 12,809.91, 19,190.16 and 7,246.23

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Solution

The fourth proportional to 12,809.91, 19,190.16 and 7,246.23 is: 10,855.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.91 : 19,190.16 = 7,246.23 : x
  2. Step 2: Convert to fraction form
    12,809.91/19,190.16 = 7,246.23/x
  3. Step 3: Cross multiply
    12,809.91x = 19,190.16 × 7,246.23
  4. Step 4: Simplify right side
    12,809.91x = 139,056,313.10
  5. Step 5: Solve for x
    x = 139,056,313.10/12,809.91
  6. Step 6: Final answer
    x = 10,855.37

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Double scale
Find fourth proportional to 12,810.91, 19,191.66 and 7,247.23
Similar ratio
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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.