Home / 20,754.75-28,641.64-11,323.51

Finding the Fourth Proportional to 20,754.75, 28,641.64 and 11,323.51

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Solution

The fourth proportional to 20,754.75, 28,641.64 and 11,323.51 is: 15,626.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.75 : 28,641.64 = 11,323.51 : x
  2. Step 2: Convert to fraction form
    20,754.75/28,641.64 = 11,323.51/x
  3. Step 3: Cross multiply
    20,754.75x = 28,641.64 × 11,323.51
  4. Step 4: Simplify right side
    20,754.75x = 324,323,896.96
  5. Step 5: Solve for x
    x = 324,323,896.96/20,754.75
  6. Step 6: Final answer
    x = 15,626.49

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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.