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Finding the Fourth Proportional to 14,452.21, 19,943.63 and 8,078.81

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Solution

The fourth proportional to 14,452.21, 19,943.63 and 8,078.81 is: 11,148.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,452.21 : 19,943.63 = 8,078.81 : x
  2. Step 2: Convert to fraction form
    14,452.21/19,943.63 = 8,078.81/x
  3. Step 3: Cross multiply
    14,452.21x = 19,943.63 × 8,078.81
  4. Step 4: Simplify right side
    14,452.21x = 161,120,797.48
  5. Step 5: Solve for x
    x = 161,120,797.48/14,452.21
  6. Step 6: Final answer
    x = 11,148.52

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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.