Home / 13,578.26-18,732.21-9,379.22

Finding the Fourth Proportional to 13,578.26, 18,732.21 and 9,379.22

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Solution

The fourth proportional to 13,578.26, 18,732.21 and 9,379.22 is: 12,939.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.26 : 18,732.21 = 9,379.22 : x
  2. Step 2: Convert to fraction form
    13,578.26/18,732.21 = 9,379.22/x
  3. Step 3: Cross multiply
    13,578.26x = 18,732.21 × 9,379.22
  4. Step 4: Simplify right side
    13,578.26x = 175,693,518.68
  5. Step 5: Solve for x
    x = 175,693,518.68/13,578.26
  6. Step 6: Final answer
    x = 12,939.32

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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.