Home / 19,538.78-29,308.12-4,747.70

Finding the Fourth Proportional to 19,538.78, 29,308.12 and 4,747.70

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Solution

The fourth proportional to 19,538.78, 29,308.12 and 4,747.70 is: 7,121.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,538.78 : 29,308.12 = 4,747.70 : x
  2. Step 2: Convert to fraction form
    19,538.78/29,308.12 = 4,747.70/x
  3. Step 3: Cross multiply
    19,538.78x = 29,308.12 × 4,747.70
  4. Step 4: Simplify right side
    19,538.78x = 139,146,222.73
  5. Step 5: Solve for x
    x = 139,146,222.73/19,538.78
  6. Step 6: Final answer
    x = 7,121.54

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1.5x scale

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.