Home / 21,439.01-29,586.06-11,879.19

Finding the Fourth Proportional to 21,439.01, 29,586.06 and 11,879.19

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Solution

The fourth proportional to 21,439.01, 29,586.06 and 11,879.19 is: 16,393.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.01 : 29,586.06 = 11,879.19 : x
  2. Step 2: Convert to fraction form
    21,439.01/29,586.06 = 11,879.19/x
  3. Step 3: Cross multiply
    21,439.01x = 29,586.06 × 11,879.19
  4. Step 4: Simplify right side
    21,439.01x = 351,458,428.09
  5. Step 5: Solve for x
    x = 351,458,428.09/21,439.01
  6. Step 6: Final answer
    x = 16,393.41

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Half scale
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Double scale
Find fourth proportional to 21,440.01, 29,587.44 and 11,880.19
Similar ratio
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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.