Home / 20,625.74-28,445.94-13,902.54

Finding the Fourth Proportional to 20,625.74, 28,445.94 and 13,902.54

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Solution

The fourth proportional to 20,625.74, 28,445.94 and 13,902.54 is: 19,173.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,625.74 : 28,445.94 = 13,902.54 : x
  2. Step 2: Convert to fraction form
    20,625.74/28,445.94 = 13,902.54/x
  3. Step 3: Cross multiply
    20,625.74x = 28,445.94 × 13,902.54
  4. Step 4: Simplify right side
    20,625.74x = 395,470,818.69
  5. Step 5: Solve for x
    x = 395,470,818.69/20,625.74
  6. Step 6: Final answer
    x = 19,173.65

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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.