Home / 20,764.94-28,655.42-11,333.51

Finding the Fourth Proportional to 20,764.94, 28,655.42 and 11,333.51

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Solution

The fourth proportional to 20,764.94, 28,655.42 and 11,333.51 is: 15,640.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.94 : 28,655.42 = 11,333.51 : x
  2. Step 2: Convert to fraction form
    20,764.94/28,655.42 = 11,333.51/x
  3. Step 3: Cross multiply
    20,764.94x = 28,655.42 × 11,333.51
  4. Step 4: Simplify right side
    20,764.94x = 324,766,289.18
  5. Step 5: Solve for x
    x = 324,766,289.18/20,764.94
  6. Step 6: Final answer
    x = 15,640.13

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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.