Home / 18,911.88-28,339.83-16,835.76

Finding the Fourth Proportional to 18,911.88, 28,339.83 and 16,835.76

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Solution

The fourth proportional to 18,911.88, 28,339.83 and 16,835.76 is: 25,228.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.88 : 28,339.83 = 16,835.76 : x
  2. Step 2: Convert to fraction form
    18,911.88/28,339.83 = 16,835.76/x
  3. Step 3: Cross multiply
    18,911.88x = 28,339.83 × 16,835.76
  4. Step 4: Simplify right side
    18,911.88x = 477,122,576.32
  5. Step 5: Solve for x
    x = 477,122,576.32/18,911.88
  6. Step 6: Final answer
    x = 25,228.72

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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.