Home / 20,425.77-28,185.37-11,474.26

Finding the Fourth Proportional to 20,425.77, 28,185.37 and 11,474.26

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Solution

The fourth proportional to 20,425.77, 28,185.37 and 11,474.26 is: 15,833.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.77 : 28,185.37 = 11,474.26 : x
  2. Step 2: Convert to fraction form
    20,425.77/28,185.37 = 11,474.26/x
  3. Step 3: Cross multiply
    20,425.77x = 28,185.37 × 11,474.26
  4. Step 4: Simplify right side
    20,425.77x = 323,406,164.43
  5. Step 5: Solve for x
    x = 323,406,164.43/20,425.77
  6. Step 6: Final answer
    x = 15,833.24

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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.