Home / 38,989.86-53,805.35-21,994.14

Finding the Fourth Proportional to 38,989.86, 53,805.35 and 21,994.14

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Solution

The fourth proportional to 38,989.86, 53,805.35 and 21,994.14 is: 30,351.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,989.86 : 53,805.35 = 21,994.14 : x
  2. Step 2: Convert to fraction form
    38,989.86/53,805.35 = 21,994.14/x
  3. Step 3: Cross multiply
    38,989.86x = 53,805.35 × 21,994.14
  4. Step 4: Simplify right side
    38,989.86x = 1,183,402,290.68
  5. Step 5: Solve for x
    x = 1,183,402,290.68/38,989.86
  6. Step 6: Final answer
    x = 30,351.54

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Half scale
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Double scale
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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.