Home / 28,393.58-39,183.40-15,647.22

Finding the Fourth Proportional to 28,393.58, 39,183.40 and 15,647.22

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Solution

The fourth proportional to 28,393.58, 39,183.40 and 15,647.22 is: 21,593.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,393.58 : 39,183.40 = 15,647.22 : x
  2. Step 2: Convert to fraction form
    28,393.58/39,183.40 = 15,647.22/x
  3. Step 3: Cross multiply
    28,393.58x = 39,183.40 × 15,647.22
  4. Step 4: Simplify right side
    28,393.58x = 613,111,123.51
  5. Step 5: Solve for x
    x = 613,111,123.51/28,393.58
  6. Step 6: Final answer
    x = 21,593.30

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Half scale
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Double scale
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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.