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Finding the Fourth Proportional to 9,994.95, 13,792.74 and 5,518.38

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Solution

The fourth proportional to 9,994.95, 13,792.74 and 5,518.38 is: 7,615.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,994.95 : 13,792.74 = 5,518.38 : x
  2. Step 2: Convert to fraction form
    9,994.95/13,792.74 = 5,518.38/x
  3. Step 3: Cross multiply
    9,994.95x = 13,792.74 × 5,518.38
  4. Step 4: Simplify right side
    9,994.95x = 76,113,580.56
  5. Step 5: Solve for x
    x = 76,113,580.56/9,994.95
  6. Step 6: Final answer
    x = 7,615.20

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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.