Home / 20,482.15-28,268.06-11,531.40

Finding the Fourth Proportional to 20,482.15, 28,268.06 and 11,531.40

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Solution

The fourth proportional to 20,482.15, 28,268.06 and 11,531.40 is: 15,914.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,482.15 : 28,268.06 = 11,531.40 : x
  2. Step 2: Convert to fraction form
    20,482.15/28,268.06 = 11,531.40/x
  3. Step 3: Cross multiply
    20,482.15x = 28,268.06 × 11,531.40
  4. Step 4: Simplify right side
    20,482.15x = 325,970,249.43
  5. Step 5: Solve for x
    x = 325,970,249.43/20,482.15
  6. Step 6: Final answer
    x = 15,914.85

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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.