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Finding the Fourth Proportional to 12,328.50, 17,013.36 and 6,739.50

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Solution

The fourth proportional to 12,328.50, 17,013.36 and 6,739.50 is: 9,300.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,328.50 : 17,013.36 = 6,739.50 : x
  2. Step 2: Convert to fraction form
    12,328.50/17,013.36 = 6,739.50/x
  3. Step 3: Cross multiply
    12,328.50x = 17,013.36 × 6,739.50
  4. Step 4: Simplify right side
    12,328.50x = 114,661,539.72
  5. Step 5: Solve for x
    x = 114,661,539.72/12,328.50
  6. Step 6: Final answer
    x = 9,300.53

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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.