Home / 28,014.78-38,659.68-15,268.29

Finding the Fourth Proportional to 28,014.78, 38,659.68 and 15,268.29

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Solution

The fourth proportional to 28,014.78, 38,659.68 and 15,268.29 is: 21,069.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,014.78 : 38,659.68 = 15,268.29 : x
  2. Step 2: Convert to fraction form
    28,014.78/38,659.68 = 15,268.29/x
  3. Step 3: Cross multiply
    28,014.78x = 38,659.68 × 15,268.29
  4. Step 4: Simplify right side
    28,014.78x = 590,267,205.55
  5. Step 5: Solve for x
    x = 590,267,205.55/28,014.78
  6. Step 6: Final answer
    x = 21,069.85

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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.