Home / 12,999.40-17,939.34-7,334.12

Finding the Fourth Proportional to 12,999.40, 17,939.34 and 7,334.12

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Solution

The fourth proportional to 12,999.40, 17,939.34 and 7,334.12 is: 10,121.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.40 : 17,939.34 = 7,334.12 : x
  2. Step 2: Convert to fraction form
    12,999.40/17,939.34 = 7,334.12/x
  3. Step 3: Cross multiply
    12,999.40x = 17,939.34 × 7,334.12
  4. Step 4: Simplify right side
    12,999.40x = 131,569,235.61
  5. Step 5: Solve for x
    x = 131,569,235.61/12,999.40
  6. Step 6: Final answer
    x = 10,121.18

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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.