Home / 19,005.68-28,519.32-12,768.68

Finding the Fourth Proportional to 19,005.68, 28,519.32 and 12,768.68

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Solution

The fourth proportional to 19,005.68, 28,519.32 and 12,768.68 is: 19,160.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.68 : 28,519.32 = 12,768.68 : x
  2. Step 2: Convert to fraction form
    19,005.68/28,519.32 = 12,768.68/x
  3. Step 3: Cross multiply
    19,005.68x = 28,519.32 × 12,768.68
  4. Step 4: Simplify right side
    19,005.68x = 364,154,070.90
  5. Step 5: Solve for x
    x = 364,154,070.90/19,005.68
  6. Step 6: Final answer
    x = 19,160.28

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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.