Home / 12,123.18-18,181.44-8,602.74

Finding the Fourth Proportional to 12,123.18, 18,181.44 and 8,602.74

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Solution

The fourth proportional to 12,123.18, 18,181.44 and 8,602.74 is: 12,901.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.18 : 18,181.44 = 8,602.74 : x
  2. Step 2: Convert to fraction form
    12,123.18/18,181.44 = 8,602.74/x
  3. Step 3: Cross multiply
    12,123.18x = 18,181.44 × 8,602.74
  4. Step 4: Simplify right side
    12,123.18x = 156,410,201.15
  5. Step 5: Solve for x
    x = 156,410,201.15/12,123.18
  6. Step 6: Final answer
    x = 12,901.75

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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.