Home / 12,664.80-17,477.34-6,999.90

Finding the Fourth Proportional to 12,664.80, 17,477.34 and 6,999.90

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Solution

The fourth proportional to 12,664.80, 17,477.34 and 6,999.90 is: 9,659.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.80 : 17,477.34 = 6,999.90 : x
  2. Step 2: Convert to fraction form
    12,664.80/17,477.34 = 6,999.90/x
  3. Step 3: Cross multiply
    12,664.80x = 17,477.34 × 6,999.90
  4. Step 4: Simplify right side
    12,664.80x = 122,339,632.27
  5. Step 5: Solve for x
    x = 122,339,632.27/12,664.80
  6. Step 6: Final answer
    x = 9,659.82

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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.