Home / 20,425.33-28,194.33-15,403.93

Finding the Fourth Proportional to 20,425.33, 28,194.33 and 15,403.93

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Solution

The fourth proportional to 20,425.33, 28,194.33 and 15,403.93 is: 21,262.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.33 : 28,194.33 = 15,403.93 : x
  2. Step 2: Convert to fraction form
    20,425.33/28,194.33 = 15,403.93/x
  3. Step 3: Cross multiply
    20,425.33x = 28,194.33 × 15,403.93
  4. Step 4: Simplify right side
    20,425.33x = 434,303,485.72
  5. Step 5: Solve for x
    x = 434,303,485.72/20,425.33
  6. Step 6: Final answer
    x = 21,262.99

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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.