Home / 20,425.68-28,185.36-11,925.54

Finding the Fourth Proportional to 20,425.68, 28,185.36 and 11,925.54

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Solution

The fourth proportional to 20,425.68, 28,185.36 and 11,925.54 is: 16,456.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.68 : 28,185.36 = 11,925.54 : x
  2. Step 2: Convert to fraction form
    20,425.68/28,185.36 = 11,925.54/x
  3. Step 3: Cross multiply
    20,425.68x = 28,185.36 × 11,925.54
  4. Step 4: Simplify right side
    20,425.68x = 336,125,638.09
  5. Step 5: Solve for x
    x = 336,125,638.09/20,425.68
  6. Step 6: Final answer
    x = 16,456.03

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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.