Home / 12,661.36-17,467.32-8,470.96

Finding the Fourth Proportional to 12,661.36, 17,467.32 and 8,470.96

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Solution

The fourth proportional to 12,661.36, 17,467.32 and 8,470.96 is: 11,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.36 : 17,467.32 = 8,470.96 : x
  2. Step 2: Convert to fraction form
    12,661.36/17,467.32 = 8,470.96/x
  3. Step 3: Cross multiply
    12,661.36x = 17,467.32 × 8,470.96
  4. Step 4: Simplify right side
    12,661.36x = 147,964,969.03
  5. Step 5: Solve for x
    x = 147,964,969.03/12,661.36
  6. Step 6: Final answer
    x = 11,686.34

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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.