Home / 19,538.78-29,308.14-4,747.68

Finding the Fourth Proportional to 19,538.78, 29,308.14 and 4,747.68

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Solution

The fourth proportional to 19,538.78, 29,308.14 and 4,747.68 is: 7,121.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,538.78 : 29,308.14 = 4,747.68 : x
  2. Step 2: Convert to fraction form
    19,538.78/29,308.14 = 4,747.68/x
  3. Step 3: Cross multiply
    19,538.78x = 29,308.14 × 4,747.68
  4. Step 4: Simplify right side
    19,538.78x = 139,145,670.12
  5. Step 5: Solve for x
    x = 139,145,670.12/19,538.78
  6. Step 6: Final answer
    x = 7,121.51

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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.