Home / 28,351.97-42,479.35-20,017.07

Finding the Fourth Proportional to 28,351.97, 42,479.35 and 20,017.07

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Solution

The fourth proportional to 28,351.97, 42,479.35 and 20,017.07 is: 29,991.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,351.97 : 42,479.35 = 20,017.07 : x
  2. Step 2: Convert to fraction form
    28,351.97/42,479.35 = 20,017.07/x
  3. Step 3: Cross multiply
    28,351.97x = 42,479.35 × 20,017.07
  4. Step 4: Simplify right side
    28,351.97x = 850,311,860.07
  5. Step 5: Solve for x
    x = 850,311,860.07/28,351.97
  6. Step 6: Final answer
    x = 29,991.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.