Home / 28,513.87-39,348.58-15,767.50

Finding the Fourth Proportional to 28,513.87, 39,348.58 and 15,767.50

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Solution

The fourth proportional to 28,513.87, 39,348.58 and 15,767.50 is: 21,758.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513.87 : 39,348.58 = 15,767.50 : x
  2. Step 2: Convert to fraction form
    28,513.87/39,348.58 = 15,767.50/x
  3. Step 3: Cross multiply
    28,513.87x = 39,348.58 × 15,767.50
  4. Step 4: Simplify right side
    28,513.87x = 620,428,735.15
  5. Step 5: Solve for x
    x = 620,428,735.15/28,513.87
  6. Step 6: Final answer
    x = 21,758.84

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.