Home / 31,138.48-46,707.89-7,764.91

Finding the Fourth Proportional to 31,138.48, 46,707.89 and 7,764.91

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Solution

The fourth proportional to 31,138.48, 46,707.89 and 7,764.91 is: 11,647.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,138.48 : 46,707.89 = 7,764.91 : x
  2. Step 2: Convert to fraction form
    31,138.48/46,707.89 = 7,764.91/x
  3. Step 3: Cross multiply
    31,138.48x = 46,707.89 × 7,764.91
  4. Step 4: Simplify right side
    31,138.48x = 362,682,712.96
  5. Step 5: Solve for x
    x = 362,682,712.96/31,138.48
  6. Step 6: Final answer
    x = 11,647.41

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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.