Home / 30,418.48-45,627.76-21,028.96

Finding the Fourth Proportional to 30,418.48, 45,627.76 and 21,028.96

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Solution

The fourth proportional to 30,418.48, 45,627.76 and 21,028.96 is: 31,543.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,418.48 : 45,627.76 = 21,028.96 : x
  2. Step 2: Convert to fraction form
    30,418.48/45,627.76 = 21,028.96/x
  3. Step 3: Cross multiply
    30,418.48x = 45,627.76 × 21,028.96
  4. Step 4: Simplify right side
    30,418.48x = 959,504,339.93
  5. Step 5: Solve for x
    x = 959,504,339.93/30,418.48
  6. Step 6: Final answer
    x = 31,543.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.