Home / 11,946.24-16,485.36-6,640.80

Finding the Fourth Proportional to 11,946.24, 16,485.36 and 6,640.80

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Solution

The fourth proportional to 11,946.24, 16,485.36 and 6,640.80 is: 9,164.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,946.24 : 16,485.36 = 6,640.80 : x
  2. Step 2: Convert to fraction form
    11,946.24/16,485.36 = 6,640.80/x
  3. Step 3: Cross multiply
    11,946.24x = 16,485.36 × 6,640.80
  4. Step 4: Simplify right side
    11,946.24x = 109,475,978.69
  5. Step 5: Solve for x
    x = 109,475,978.69/11,946.24
  6. Step 6: Final answer
    x = 9,164.05

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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.