Home / 28,382.57-39,167.48-15,636.96

Finding the Fourth Proportional to 28,382.57, 39,167.48 and 15,636.96

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Solution

The fourth proportional to 28,382.57, 39,167.48 and 15,636.96 is: 21,578.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.57 : 39,167.48 = 15,636.96 : x
  2. Step 2: Convert to fraction form
    28,382.57/39,167.48 = 15,636.96/x
  3. Step 3: Cross multiply
    28,382.57x = 39,167.48 × 15,636.96
  4. Step 4: Simplify right side
    28,382.57x = 612,460,239.88
  5. Step 5: Solve for x
    x = 612,460,239.88/28,382.57
  6. Step 6: Final answer
    x = 21,578.75

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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.