Home / 20,661.93-28,512.54-11,708.91

Finding the Fourth Proportional to 20,661.93, 28,512.54 and 11,708.91

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Solution

The fourth proportional to 20,661.93, 28,512.54 and 11,708.91 is: 16,157.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.93 : 28,512.54 = 11,708.91 : x
  2. Step 2: Convert to fraction form
    20,661.93/28,512.54 = 11,708.91/x
  3. Step 3: Cross multiply
    20,661.93x = 28,512.54 × 11,708.91
  4. Step 4: Simplify right side
    20,661.93x = 333,850,764.73
  5. Step 5: Solve for x
    x = 333,850,764.73/20,661.93
  6. Step 6: Final answer
    x = 16,157.77

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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.