Home / 28,091.25-38,766.33-15,516

Finding the Fourth Proportional to 28,091.25, 38,766.33 and 15,516

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Solution

The fourth proportional to 28,091.25, 38,766.33 and 15,516 is: 21,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.25 : 38,766.33 = 15,516 : x
  2. Step 2: Convert to fraction form
    28,091.25/38,766.33 = 15,516/x
  3. Step 3: Cross multiply
    28,091.25x = 38,766.33 × 15,516
  4. Step 4: Simplify right side
    28,091.25x = 601,498,376.28
  5. Step 5: Solve for x
    x = 601,498,376.28/28,091.25
  6. Step 6: Final answer
    x = 21,412.30

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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.