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Finding the Fourth Proportional to 9,333.20, 13,999.80 and 8,469.20

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Solution

The fourth proportional to 9,333.20, 13,999.80 and 8,469.20 is: 12,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,333.20 : 13,999.80 = 8,469.20 : x
  2. Step 2: Convert to fraction form
    9,333.20/13,999.80 = 8,469.20/x
  3. Step 3: Cross multiply
    9,333.20x = 13,999.80 × 8,469.20
  4. Step 4: Simplify right side
    9,333.20x = 118,567,106.16
  5. Step 5: Solve for x
    x = 118,567,106.16/9,333.20
  6. Step 6: Final answer
    x = 12,703.80

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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.