Home / 20,972.58-28,941.39-11,540.94

Finding the Fourth Proportional to 20,972.58, 28,941.39 and 11,540.94

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Solution

The fourth proportional to 20,972.58, 28,941.39 and 11,540.94 is: 15,926.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.58 : 28,941.39 = 11,540.94 : x
  2. Step 2: Convert to fraction form
    20,972.58/28,941.39 = 11,540.94/x
  3. Step 3: Cross multiply
    20,972.58x = 28,941.39 × 11,540.94
  4. Step 4: Simplify right side
    20,972.58x = 334,010,845.51
  5. Step 5: Solve for x
    x = 334,010,845.51/20,972.58
  6. Step 6: Final answer
    x = 15,926.07

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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.