Home / 19,920.96-29,886.12-11,161.92

Finding the Fourth Proportional to 19,920.96, 29,886.12 and 11,161.92

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Solution

The fourth proportional to 19,920.96, 29,886.12 and 11,161.92 is: 16,745.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.96 : 29,886.12 = 11,161.92 : x
  2. Step 2: Convert to fraction form
    19,920.96/29,886.12 = 11,161.92/x
  3. Step 3: Cross multiply
    19,920.96x = 29,886.12 × 11,161.92
  4. Step 4: Simplify right side
    19,920.96x = 333,586,480.55
  5. Step 5: Solve for x
    x = 333,586,480.55/19,920.96
  6. Step 6: Final answer
    x = 16,745.50

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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.