Home / 20,954.84-28,917.35-11,394.92

Finding the Fourth Proportional to 20,954.84, 28,917.35 and 11,394.92

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Solution

The fourth proportional to 20,954.84, 28,917.35 and 11,394.92 is: 15,724.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.84 : 28,917.35 = 11,394.92 : x
  2. Step 2: Convert to fraction form
    20,954.84/28,917.35 = 11,394.92/x
  3. Step 3: Cross multiply
    20,954.84x = 28,917.35 × 11,394.92
  4. Step 4: Simplify right side
    20,954.84x = 329,510,832.89
  5. Step 5: Solve for x
    x = 329,510,832.89/20,954.84
  6. Step 6: Final answer
    x = 15,724.81

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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.