Home / 20,480.24-28,265.45-11,529.51

Finding the Fourth Proportional to 20,480.24, 28,265.45 and 11,529.51

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Solution

The fourth proportional to 20,480.24, 28,265.45 and 11,529.51 is: 15,912.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480.24 : 28,265.45 = 11,529.51 : x
  2. Step 2: Convert to fraction form
    20,480.24/28,265.45 = 11,529.51/x
  3. Step 3: Cross multiply
    20,480.24x = 28,265.45 × 11,529.51
  4. Step 4: Simplify right side
    20,480.24x = 325,886,788.43
  5. Step 5: Solve for x
    x = 325,886,788.43/20,480.24
  6. Step 6: Final answer
    x = 15,912.25

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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.