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Finding the Fourth Proportional to 14,615.82, 21,919.91 and 5,254.74

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Solution

The fourth proportional to 14,615.82, 21,919.91 and 5,254.74 is: 7,880.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,615.82 : 21,919.91 = 5,254.74 : x
  2. Step 2: Convert to fraction form
    14,615.82/21,919.91 = 5,254.74/x
  3. Step 3: Cross multiply
    14,615.82x = 21,919.91 × 5,254.74
  4. Step 4: Simplify right side
    14,615.82x = 115,183,401.60
  5. Step 5: Solve for x
    x = 115,183,401.60/14,615.82
  6. Step 6: Final answer
    x = 7,880.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.