Home / 18,801.93-28,196.40-7,705.47

Finding the Fourth Proportional to 18,801.93, 28,196.40 and 7,705.47

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Solution

The fourth proportional to 18,801.93, 28,196.40 and 7,705.47 is: 11,555.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.93 : 28,196.40 = 7,705.47 : x
  2. Step 2: Convert to fraction form
    18,801.93/28,196.40 = 7,705.47/x
  3. Step 3: Cross multiply
    18,801.93x = 28,196.40 × 7,705.47
  4. Step 4: Simplify right side
    18,801.93x = 217,266,514.31
  5. Step 5: Solve for x
    x = 217,266,514.31/18,801.93
  6. Step 6: Final answer
    x = 11,555.54

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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.