Home / 19,078.16-28,636.68-13,155.44

Finding the Fourth Proportional to 19,078.16, 28,636.68 and 13,155.44

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Solution

The fourth proportional to 19,078.16, 28,636.68 and 13,155.44 is: 19,746.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,078.16 : 28,636.68 = 13,155.44 : x
  2. Step 2: Convert to fraction form
    19,078.16/28,636.68 = 13,155.44/x
  3. Step 3: Cross multiply
    19,078.16x = 28,636.68 × 13,155.44
  4. Step 4: Simplify right side
    19,078.16x = 376,728,125.54
  5. Step 5: Solve for x
    x = 376,728,125.54/19,078.16
  6. Step 6: Final answer
    x = 19,746.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.