Home / 12,942.11-19,405.32-8,442.53

Finding the Fourth Proportional to 12,942.11, 19,405.32 and 8,442.53

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Solution

The fourth proportional to 12,942.11, 19,405.32 and 8,442.53 is: 12,658.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.11 : 19,405.32 = 8,442.53 : x
  2. Step 2: Convert to fraction form
    12,942.11/19,405.32 = 8,442.53/x
  3. Step 3: Cross multiply
    12,942.11x = 19,405.32 × 8,442.53
  4. Step 4: Simplify right side
    12,942.11x = 163,829,940.34
  5. Step 5: Solve for x
    x = 163,829,940.34/12,942.11
  6. Step 6: Final answer
    x = 12,658.67

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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.