Home / 28,216.36-38,989.32-20,244.58

Finding the Fourth Proportional to 28,216.36, 38,989.32 and 20,244.58

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Solution

The fourth proportional to 28,216.36, 38,989.32 and 20,244.58 is: 27,973.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.36 : 38,989.32 = 20,244.58 : x
  2. Step 2: Convert to fraction form
    28,216.36/38,989.32 = 20,244.58/x
  3. Step 3: Cross multiply
    28,216.36x = 38,989.32 × 20,244.58
  4. Step 4: Simplify right side
    28,216.36x = 789,322,407.89
  5. Step 5: Solve for x
    x = 789,322,407.89/28,216.36
  6. Step 6: Final answer
    x = 27,973.93

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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.