Home / 12,123.56-18,195-6,281.84

Finding the Fourth Proportional to 12,123.56, 18,195 and 6,281.84

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Solution

The fourth proportional to 12,123.56, 18,195 and 6,281.84 is: 9,427.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.56 : 18,195 = 6,281.84 : x
  2. Step 2: Convert to fraction form
    12,123.56/18,195 = 6,281.84/x
  3. Step 3: Cross multiply
    12,123.56x = 18,195 × 6,281.84
  4. Step 4: Simplify right side
    12,123.56x = 114,298,078.80
  5. Step 5: Solve for x
    x = 114,298,078.80/12,123.56
  6. Step 6: Final answer
    x = 9,427.77

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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.