Home / 13,218.46-18,244.67-8,976.60

Finding the Fourth Proportional to 13,218.46, 18,244.67 and 8,976.60

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Solution

The fourth proportional to 13,218.46, 18,244.67 and 8,976.60 is: 12,389.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.46 : 18,244.67 = 8,976.60 : x
  2. Step 2: Convert to fraction form
    13,218.46/18,244.67 = 8,976.60/x
  3. Step 3: Cross multiply
    13,218.46x = 18,244.67 × 8,976.60
  4. Step 4: Simplify right side
    13,218.46x = 163,775,059.84
  5. Step 5: Solve for x
    x = 163,775,059.84/13,218.46
  6. Step 6: Final answer
    x = 12,389.88

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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.