Home / 19,170.96-28,766.16-13,640.28

Finding the Fourth Proportional to 19,170.96, 28,766.16 and 13,640.28

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Solution

The fourth proportional to 19,170.96, 28,766.16 and 13,640.28 is: 20,467.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,170.96 : 28,766.16 = 13,640.28 : x
  2. Step 2: Convert to fraction form
    19,170.96/28,766.16 = 13,640.28/x
  3. Step 3: Cross multiply
    19,170.96x = 28,766.16 × 13,640.28
  4. Step 4: Simplify right side
    19,170.96x = 392,378,476.92
  5. Step 5: Solve for x
    x = 392,378,476.92/19,170.96
  6. Step 6: Final answer
    x = 20,467.34

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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.