Home / 21,994.06-30,356.76-18,451.12

Finding the Fourth Proportional to 21,994.06, 30,356.76 and 18,451.12

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Solution

The fourth proportional to 21,994.06, 30,356.76 and 18,451.12 is: 25,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,994.06 : 30,356.76 = 18,451.12 : x
  2. Step 2: Convert to fraction form
    21,994.06/30,356.76 = 18,451.12/x
  3. Step 3: Cross multiply
    21,994.06x = 30,356.76 × 18,451.12
  4. Step 4: Simplify right side
    21,994.06x = 560,116,221.57
  5. Step 5: Solve for x
    x = 560,116,221.57/21,994.06
  6. Step 6: Final answer
    x = 25,466.70

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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.