Home / 20,464.84-28,241.20-11,512.35

Finding the Fourth Proportional to 20,464.84, 28,241.20 and 11,512.35

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Solution

The fourth proportional to 20,464.84, 28,241.20 and 11,512.35 is: 15,886.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.84 : 28,241.20 = 11,512.35 : x
  2. Step 2: Convert to fraction form
    20,464.84/28,241.20 = 11,512.35/x
  3. Step 3: Cross multiply
    20,464.84x = 28,241.20 × 11,512.35
  4. Step 4: Simplify right side
    20,464.84x = 325,122,578.82
  5. Step 5: Solve for x
    x = 325,122,578.82/20,464.84
  6. Step 6: Final answer
    x = 15,886.89

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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.