Home / 28,268.12-39,010.20-15,692.88

Finding the Fourth Proportional to 28,268.12, 39,010.20 and 15,692.88

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Solution

The fourth proportional to 28,268.12, 39,010.20 and 15,692.88 is: 21,656.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.12 : 39,010.20 = 15,692.88 : x
  2. Step 2: Convert to fraction form
    28,268.12/39,010.20 = 15,692.88/x
  3. Step 3: Cross multiply
    28,268.12x = 39,010.20 × 15,692.88
  4. Step 4: Simplify right side
    28,268.12x = 612,182,387.38
  5. Step 5: Solve for x
    x = 612,182,387.38/28,268.12
  6. Step 6: Final answer
    x = 21,656.28

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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.