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Finding the Fourth Proportional to 9,994.76, 13,792.84 and 5,518.80

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Solution

The fourth proportional to 9,994.76, 13,792.84 and 5,518.80 is: 7,615.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,994.76 : 13,792.84 = 5,518.80 : x
  2. Step 2: Convert to fraction form
    9,994.76/13,792.84 = 5,518.80/x
  3. Step 3: Cross multiply
    9,994.76x = 13,792.84 × 5,518.80
  4. Step 4: Simplify right side
    9,994.76x = 76,119,911.60
  5. Step 5: Solve for x
    x = 76,119,911.60/9,994.76
  6. Step 6: Final answer
    x = 7,615.98

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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.