Home / 20,284.83-28,028.84-15,609.51

Finding the Fourth Proportional to 20,284.83, 28,028.84 and 15,609.51

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Solution

The fourth proportional to 20,284.83, 28,028.84 and 15,609.51 is: 21,568.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.83 : 28,028.84 = 15,609.51 : x
  2. Step 2: Convert to fraction form
    20,284.83/28,028.84 = 15,609.51/x
  3. Step 3: Cross multiply
    20,284.83x = 28,028.84 × 15,609.51
  4. Step 4: Simplify right side
    20,284.83x = 437,516,380.22
  5. Step 5: Solve for x
    x = 437,516,380.22/20,284.83
  6. Step 6: Final answer
    x = 21,568.65

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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.