Home / 38,506.23-53,138.79-21,511.19

Finding the Fourth Proportional to 38,506.23, 53,138.79 and 21,511.19

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Solution

The fourth proportional to 38,506.23, 53,138.79 and 21,511.19 is: 29,685.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,506.23 : 53,138.79 = 21,511.19 : x
  2. Step 2: Convert to fraction form
    38,506.23/53,138.79 = 21,511.19/x
  3. Step 3: Cross multiply
    38,506.23x = 53,138.79 × 21,511.19
  4. Step 4: Simplify right side
    38,506.23x = 1,143,078,342.37
  5. Step 5: Solve for x
    x = 1,143,078,342.37/38,506.23
  6. Step 6: Final answer
    x = 29,685.54

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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.