Home / 19,590.78-29,390.52-6,442.62

Finding the Fourth Proportional to 19,590.78, 29,390.52 and 6,442.62

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Solution

The fourth proportional to 19,590.78, 29,390.52 and 6,442.62 is: 9,665.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,590.78 : 29,390.52 = 6,442.62 : x
  2. Step 2: Convert to fraction form
    19,590.78/29,390.52 = 6,442.62/x
  3. Step 3: Cross multiply
    19,590.78x = 29,390.52 × 6,442.62
  4. Step 4: Simplify right side
    19,590.78x = 189,351,951.96
  5. Step 5: Solve for x
    x = 189,351,951.96/19,590.78
  6. Step 6: Final answer
    x = 9,665.36

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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.