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Finding the Fourth Proportional to 18,344.64, 27,392.64 and 14,404.80

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Solution

The fourth proportional to 18,344.64, 27,392.64 and 14,404.80 is: 21,509.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,344.64 : 27,392.64 = 14,404.80 : x
  2. Step 2: Convert to fraction form
    18,344.64/27,392.64 = 14,404.80/x
  3. Step 3: Cross multiply
    18,344.64x = 27,392.64 × 14,404.80
  4. Step 4: Simplify right side
    18,344.64x = 394,585,500.67
  5. Step 5: Solve for x
    x = 394,585,500.67/18,344.64
  6. Step 6: Final answer
    x = 21,509.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.