Home / 28,268.40-38,994.36-18,040.80

Finding the Fourth Proportional to 28,268.40, 38,994.36 and 18,040.80

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Solution

The fourth proportional to 28,268.40, 38,994.36 and 18,040.80 is: 24,886.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.40 : 38,994.36 = 18,040.80 : x
  2. Step 2: Convert to fraction form
    28,268.40/38,994.36 = 18,040.80/x
  3. Step 3: Cross multiply
    28,268.40x = 38,994.36 × 18,040.80
  4. Step 4: Simplify right side
    28,268.40x = 703,489,449.89
  5. Step 5: Solve for x
    x = 703,489,449.89/28,268.40
  6. Step 6: Final answer
    x = 24,886.07

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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.