Home / 13,712.33-18,922.82-7,745.91

Finding the Fourth Proportional to 13,712.33, 18,922.82 and 7,745.91

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Solution

The fourth proportional to 13,712.33, 18,922.82 and 7,745.91 is: 10,689.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.33 : 18,922.82 = 7,745.91 : x
  2. Step 2: Convert to fraction form
    13,712.33/18,922.82 = 7,745.91/x
  3. Step 3: Cross multiply
    13,712.33x = 18,922.82 × 7,745.91
  4. Step 4: Simplify right side
    13,712.33x = 146,574,421.94
  5. Step 5: Solve for x
    x = 146,574,421.94/13,712.33
  6. Step 6: Final answer
    x = 10,689.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.