Home / 20,846.88-28,764.18-11,890.98

Finding the Fourth Proportional to 20,846.88, 28,764.18 and 11,890.98

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Solution

The fourth proportional to 20,846.88, 28,764.18 and 11,890.98 is: 16,406.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,846.88 : 28,764.18 = 11,890.98 : x
  2. Step 2: Convert to fraction form
    20,846.88/28,764.18 = 11,890.98/x
  3. Step 3: Cross multiply
    20,846.88x = 28,764.18 × 11,890.98
  4. Step 4: Simplify right side
    20,846.88x = 342,034,289.10
  5. Step 5: Solve for x
    x = 342,034,289.10/20,846.88
  6. Step 6: Final answer
    x = 16,406.98

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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.