Home / 13,392.19-18,470.81-8,908.15

Finding the Fourth Proportional to 13,392.19, 18,470.81 and 8,908.15

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Solution

The fourth proportional to 13,392.19, 18,470.81 and 8,908.15 is: 12,286.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,392.19 : 18,470.81 = 8,908.15 : x
  2. Step 2: Convert to fraction form
    13,392.19/18,470.81 = 8,908.15/x
  3. Step 3: Cross multiply
    13,392.19x = 18,470.81 × 8,908.15
  4. Step 4: Simplify right side
    13,392.19x = 164,540,783.72
  5. Step 5: Solve for x
    x = 164,540,783.72/13,392.19
  6. Step 6: Final answer
    x = 12,286.33

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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.