Home / 19,408.96-29,120.82-7,730.38

Finding the Fourth Proportional to 19,408.96, 29,120.82 and 7,730.38

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Solution

The fourth proportional to 19,408.96, 29,120.82 and 7,730.38 is: 11,598.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,408.96 : 29,120.82 = 7,730.38 : x
  2. Step 2: Convert to fraction form
    19,408.96/29,120.82 = 7,730.38/x
  3. Step 3: Cross multiply
    19,408.96x = 29,120.82 × 7,730.38
  4. Step 4: Simplify right side
    19,408.96x = 225,115,004.51
  5. Step 5: Solve for x
    x = 225,115,004.51/19,408.96
  6. Step 6: Final answer
    x = 11,598.51

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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.