Home / 19,078.07-28,611.25-13,192.78

Finding the Fourth Proportional to 19,078.07, 28,611.25 and 13,192.78

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Solution

The fourth proportional to 19,078.07, 28,611.25 and 13,192.78 is: 19,785.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,078.07 : 28,611.25 = 13,192.78 : x
  2. Step 2: Convert to fraction form
    19,078.07/28,611.25 = 13,192.78/x
  3. Step 3: Cross multiply
    19,078.07x = 28,611.25 × 13,192.78
  4. Step 4: Simplify right side
    19,078.07x = 377,461,926.78
  5. Step 5: Solve for x
    x = 377,461,926.78/19,078.07
  6. Step 6: Final answer
    x = 19,785.12

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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.