Home / 12,123.27-16,729.87-6,818.09

Finding the Fourth Proportional to 12,123.27, 16,729.87 and 6,818.09

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Solution

The fourth proportional to 12,123.27, 16,729.87 and 6,818.09 is: 9,408.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.27 : 16,729.87 = 6,818.09 : x
  2. Step 2: Convert to fraction form
    12,123.27/16,729.87 = 6,818.09/x
  3. Step 3: Cross multiply
    12,123.27x = 16,729.87 × 6,818.09
  4. Step 4: Simplify right side
    12,123.27x = 114,065,675.79
  5. Step 5: Solve for x
    x = 114,065,675.79/12,123.27
  6. Step 6: Final answer
    x = 9,408.82

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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.