Home / 28,239.44-38,977.52-16,911.72

Finding the Fourth Proportional to 28,239.44, 38,977.52 and 16,911.72

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Solution

The fourth proportional to 28,239.44, 38,977.52 and 16,911.72 is: 23,342.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.44 : 38,977.52 = 16,911.72 : x
  2. Step 2: Convert to fraction form
    28,239.44/38,977.52 = 16,911.72/x
  3. Step 3: Cross multiply
    28,239.44x = 38,977.52 × 16,911.72
  4. Step 4: Simplify right side
    28,239.44x = 659,176,819.98
  5. Step 5: Solve for x
    x = 659,176,819.98/28,239.44
  6. Step 6: Final answer
    x = 23,342.42

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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.