Home / 12,664.40-17,477.10-6,999.48

Finding the Fourth Proportional to 12,664.40, 17,477.10 and 6,999.48

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Solution

The fourth proportional to 12,664.40, 17,477.10 and 6,999.48 is: 9,659.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.40 : 17,477.10 = 6,999.48 : x
  2. Step 2: Convert to fraction form
    12,664.40/17,477.10 = 6,999.48/x
  3. Step 3: Cross multiply
    12,664.40x = 17,477.10 × 6,999.48
  4. Step 4: Simplify right side
    12,664.40x = 122,330,611.91
  5. Step 5: Solve for x
    x = 122,330,611.91/12,664.40
  6. Step 6: Final answer
    x = 9,659.41

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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.