Home / 20,678.52-28,536.66-12,716.04

Finding the Fourth Proportional to 20,678.52, 28,536.66 and 12,716.04

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Solution

The fourth proportional to 20,678.52, 28,536.66 and 12,716.04 is: 17,548.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.52 : 28,536.66 = 12,716.04 : x
  2. Step 2: Convert to fraction form
    20,678.52/28,536.66 = 12,716.04/x
  3. Step 3: Cross multiply
    20,678.52x = 28,536.66 × 12,716.04
  4. Step 4: Simplify right side
    20,678.52x = 362,873,310.03
  5. Step 5: Solve for x
    x = 362,873,310.03/20,678.52
  6. Step 6: Final answer
    x = 17,548.32

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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.