Home / 20,759.63-28,648.89-11,328.80

Finding the Fourth Proportional to 20,759.63, 28,648.89 and 11,328.80

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Solution

The fourth proportional to 20,759.63, 28,648.89 and 11,328.80 is: 15,634.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.63 : 28,648.89 = 11,328.80 : x
  2. Step 2: Convert to fraction form
    20,759.63/28,648.89 = 11,328.80/x
  3. Step 3: Cross multiply
    20,759.63x = 28,648.89 × 11,328.80
  4. Step 4: Simplify right side
    20,759.63x = 324,557,401.79
  5. Step 5: Solve for x
    x = 324,557,401.79/20,759.63
  6. Step 6: Final answer
    x = 15,634.07

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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.