Home / 28,161.62-38,860.40-16,828.86

Finding the Fourth Proportional to 28,161.62, 38,860.40 and 16,828.86

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Solution

The fourth proportional to 28,161.62, 38,860.40 and 16,828.86 is: 23,222.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.62 : 38,860.40 = 16,828.86 : x
  2. Step 2: Convert to fraction form
    28,161.62/38,860.40 = 16,828.86/x
  3. Step 3: Cross multiply
    28,161.62x = 38,860.40 × 16,828.86
  4. Step 4: Simplify right side
    28,161.62x = 653,976,147.00
  5. Step 5: Solve for x
    x = 653,976,147.00/28,161.62
  6. Step 6: Final answer
    x = 23,222.25

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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.