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Finding the Fourth Proportional to 13,704.80, 18,901.49 and 9,454.86

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Solution

The fourth proportional to 13,704.80, 18,901.49 and 9,454.86 is: 13,040.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.80 : 18,901.49 = 9,454.86 : x
  2. Step 2: Convert to fraction form
    13,704.80/18,901.49 = 9,454.86/x
  3. Step 3: Cross multiply
    13,704.80x = 18,901.49 × 9,454.86
  4. Step 4: Simplify right side
    13,704.80x = 178,710,894.47
  5. Step 5: Solve for x
    x = 178,710,894.47/13,704.80
  6. Step 6: Final answer
    x = 13,040.03

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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.