Home / 20,659.41-28,500.66-12,698.73

Finding the Fourth Proportional to 20,659.41, 28,500.66 and 12,698.73

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Solution

The fourth proportional to 20,659.41, 28,500.66 and 12,698.73 is: 17,518.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.41 : 28,500.66 = 12,698.73 : x
  2. Step 2: Convert to fraction form
    20,659.41/28,500.66 = 12,698.73/x
  3. Step 3: Cross multiply
    20,659.41x = 28,500.66 × 12,698.73
  4. Step 4: Simplify right side
    20,659.41x = 361,922,186.16
  5. Step 5: Solve for x
    x = 361,922,186.16/20,659.41
  6. Step 6: Final answer
    x = 17,518.52

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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.