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Finding the Fourth Proportional to 19,057.49, 28,570.97 and 9,057.22

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Solution

The fourth proportional to 19,057.49, 28,570.97 and 9,057.22 is: 13,578.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,057.49 : 28,570.97 = 9,057.22 : x
  2. Step 2: Convert to fraction form
    19,057.49/28,570.97 = 9,057.22/x
  3. Step 3: Cross multiply
    19,057.49x = 28,570.97 × 9,057.22
  4. Step 4: Simplify right side
    19,057.49x = 258,773,418.05
  5. Step 5: Solve for x
    x = 258,773,418.05/19,057.49
  6. Step 6: Final answer
    x = 13,578.57

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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.