Home / 19,110.78-28,667.98-7,424.90

Finding the Fourth Proportional to 19,110.78, 28,667.98 and 7,424.90

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Solution

The fourth proportional to 19,110.78, 28,667.98 and 7,424.90 is: 11,138.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,110.78 : 28,667.98 = 7,424.90 : x
  2. Step 2: Convert to fraction form
    19,110.78/28,667.98 = 7,424.90/x
  3. Step 3: Cross multiply
    19,110.78x = 28,667.98 × 7,424.90
  4. Step 4: Simplify right side
    19,110.78x = 212,856,884.70
  5. Step 5: Solve for x
    x = 212,856,884.70/19,110.78
  6. Step 6: Final answer
    x = 11,138.05

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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.