Home / 19,530.78-29,289.45-6,379.89

Finding the Fourth Proportional to 19,530.78, 29,289.45 and 6,379.89

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Solution

The fourth proportional to 19,530.78, 29,289.45 and 6,379.89 is: 9,567.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,530.78 : 29,289.45 = 6,379.89 : x
  2. Step 2: Convert to fraction form
    19,530.78/29,289.45 = 6,379.89/x
  3. Step 3: Cross multiply
    19,530.78x = 29,289.45 × 6,379.89
  4. Step 4: Simplify right side
    19,530.78x = 186,863,469.16
  5. Step 5: Solve for x
    x = 186,863,469.16/19,530.78
  6. Step 6: Final answer
    x = 9,567.64

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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.