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Finding the Fourth Proportional to 18,671.44, 25,759.20 and 13,004.68

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Solution

The fourth proportional to 18,671.44, 25,759.20 and 13,004.68 is: 17,941.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.44 : 25,759.20 = 13,004.68 : x
  2. Step 2: Convert to fraction form
    18,671.44/25,759.20 = 13,004.68/x
  3. Step 3: Cross multiply
    18,671.44x = 25,759.20 × 13,004.68
  4. Step 4: Simplify right side
    18,671.44x = 334,990,153.06
  5. Step 5: Solve for x
    x = 334,990,153.06/18,671.44
  6. Step 6: Final answer
    x = 17,941.31

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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.