Home / 13,470.15-18,583.70-8,163.03

Finding the Fourth Proportional to 13,470.15, 18,583.70 and 8,163.03

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Solution

The fourth proportional to 13,470.15, 18,583.70 and 8,163.03 is: 11,261.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.15 : 18,583.70 = 8,163.03 : x
  2. Step 2: Convert to fraction form
    13,470.15/18,583.70 = 8,163.03/x
  3. Step 3: Cross multiply
    13,470.15x = 18,583.70 × 8,163.03
  4. Step 4: Simplify right side
    13,470.15x = 151,699,259.80
  5. Step 5: Solve for x
    x = 151,699,259.80/13,470.15
  6. Step 6: Final answer
    x = 11,261.88

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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.