Home / 20,473.43-28,268.73-20,146.47

Finding the Fourth Proportional to 20,473.43, 28,268.73 and 20,146.47

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Solution

The fourth proportional to 20,473.43, 28,268.73 and 20,146.47 is: 27,817.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.43 : 28,268.73 = 20,146.47 : x
  2. Step 2: Convert to fraction form
    20,473.43/28,268.73 = 20,146.47/x
  3. Step 3: Cross multiply
    20,473.43x = 28,268.73 × 20,146.47
  4. Step 4: Simplify right side
    20,473.43x = 569,514,979.54
  5. Step 5: Solve for x
    x = 569,514,979.54/20,473.43
  6. Step 6: Final answer
    x = 27,817.28

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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.