Home / 28,809.95-39,759.27-16,874.20

Finding the Fourth Proportional to 28,809.95, 39,759.27 and 16,874.20

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Solution

The fourth proportional to 28,809.95, 39,759.27 and 16,874.20 is: 23,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,809.95 : 39,759.27 = 16,874.20 : x
  2. Step 2: Convert to fraction form
    28,809.95/39,759.27 = 16,874.20/x
  3. Step 3: Cross multiply
    28,809.95x = 39,759.27 × 16,874.20
  4. Step 4: Simplify right side
    28,809.95x = 670,905,873.83
  5. Step 5: Solve for x
    x = 670,905,873.83/28,809.95
  6. Step 6: Final answer
    x = 23,287.30

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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.