Home / 20,925.78-28,878.99-11,494.44

Finding the Fourth Proportional to 20,925.78, 28,878.99 and 11,494.44

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Solution

The fourth proportional to 20,925.78, 28,878.99 and 11,494.44 is: 15,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.78 : 28,878.99 = 11,494.44 : x
  2. Step 2: Convert to fraction form
    20,925.78/28,878.99 = 11,494.44/x
  3. Step 3: Cross multiply
    20,925.78x = 28,878.99 × 11,494.44
  4. Step 4: Simplify right side
    20,925.78x = 331,947,817.82
  5. Step 5: Solve for x
    x = 331,947,817.82/20,925.78
  6. Step 6: Final answer
    x = 15,863.10

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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.