Home / 19,442.23-29,138.74-12,419.53

Finding the Fourth Proportional to 19,442.23, 29,138.74 and 12,419.53

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Solution

The fourth proportional to 19,442.23, 29,138.74 and 12,419.53 is: 18,613.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,442.23 : 29,138.74 = 12,419.53 : x
  2. Step 2: Convert to fraction form
    19,442.23/29,138.74 = 12,419.53/x
  3. Step 3: Cross multiply
    19,442.23x = 29,138.74 × 12,419.53
  4. Step 4: Simplify right side
    19,442.23x = 361,889,351.70
  5. Step 5: Solve for x
    x = 361,889,351.70/19,442.23
  6. Step 6: Final answer
    x = 18,613.57

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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.