Home / 28,519.36-39,361.80-17,190.88

Finding the Fourth Proportional to 28,519.36, 39,361.80 and 17,190.88

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Solution

The fourth proportional to 28,519.36, 39,361.80 and 17,190.88 is: 23,726.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.36 : 39,361.80 = 17,190.88 : x
  2. Step 2: Convert to fraction form
    28,519.36/39,361.80 = 17,190.88/x
  3. Step 3: Cross multiply
    28,519.36x = 39,361.80 × 17,190.88
  4. Step 4: Simplify right side
    28,519.36x = 676,663,980.38
  5. Step 5: Solve for x
    x = 676,663,980.38/28,519.36
  6. Step 6: Final answer
    x = 23,726.48

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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.