Home / 11,945.74-16,485.15-6,640.57

Finding the Fourth Proportional to 11,945.74, 16,485.15 and 6,640.57

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Solution

The fourth proportional to 11,945.74, 16,485.15 and 6,640.57 is: 9,164.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.74 : 16,485.15 = 6,640.57 : x
  2. Step 2: Convert to fraction form
    11,945.74/16,485.15 = 6,640.57/x
  3. Step 3: Cross multiply
    11,945.74x = 16,485.15 × 6,640.57
  4. Step 4: Simplify right side
    11,945.74x = 109,470,792.54
  5. Step 5: Solve for x
    x = 109,470,792.54/11,945.74
  6. Step 6: Final answer
    x = 9,164.00

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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.