Home / 28,043.84-38,647.32-20,072.18

Finding the Fourth Proportional to 28,043.84, 38,647.32 and 20,072.18

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Solution

The fourth proportional to 28,043.84, 38,647.32 and 20,072.18 is: 27,661.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,043.84 : 38,647.32 = 20,072.18 : x
  2. Step 2: Convert to fraction form
    28,043.84/38,647.32 = 20,072.18/x
  3. Step 3: Cross multiply
    28,043.84x = 38,647.32 × 20,072.18
  4. Step 4: Simplify right side
    28,043.84x = 775,735,963.56
  5. Step 5: Solve for x
    x = 775,735,963.56/28,043.84
  6. Step 6: Final answer
    x = 27,661.55

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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.