Home / 28,967.25-39,974.81-15,719.25

Finding the Fourth Proportional to 28,967.25, 39,974.81 and 15,719.25

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Solution

The fourth proportional to 28,967.25, 39,974.81 and 15,719.25 is: 21,692.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,967.25 : 39,974.81 = 15,719.25 : x
  2. Step 2: Convert to fraction form
    28,967.25/39,974.81 = 15,719.25/x
  3. Step 3: Cross multiply
    28,967.25x = 39,974.81 × 15,719.25
  4. Step 4: Simplify right side
    28,967.25x = 628,373,953.50
  5. Step 5: Solve for x
    x = 628,373,953.50/28,967.25
  6. Step 6: Final answer
    x = 21,692.57

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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.