Home / 20,739.51-28,633.23-12,792.60

Finding the Fourth Proportional to 20,739.51, 28,633.23 and 12,792.60

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Solution

The fourth proportional to 20,739.51, 28,633.23 and 12,792.60 is: 17,661.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.51 : 28,633.23 = 12,792.60 : x
  2. Step 2: Convert to fraction form
    20,739.51/28,633.23 = 12,792.60/x
  3. Step 3: Cross multiply
    20,739.51x = 28,633.23 × 12,792.60
  4. Step 4: Simplify right side
    20,739.51x = 366,293,458.10
  5. Step 5: Solve for x
    x = 366,293,458.10/20,739.51
  6. Step 6: Final answer
    x = 17,661.63

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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.