Home / 28,266.75-39,008.97-15,692.31

Finding the Fourth Proportional to 28,266.75, 39,008.97 and 15,692.31

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Solution

The fourth proportional to 28,266.75, 39,008.97 and 15,692.31 is: 21,655.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,266.75 : 39,008.97 = 15,692.31 : x
  2. Step 2: Convert to fraction form
    28,266.75/39,008.97 = 15,692.31/x
  3. Step 3: Cross multiply
    28,266.75x = 39,008.97 × 15,692.31
  4. Step 4: Simplify right side
    28,266.75x = 612,140,850.02
  5. Step 5: Solve for x
    x = 612,140,850.02/28,266.75
  6. Step 6: Final answer
    x = 21,655.86

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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.