Home / 30,117.86-41,548.73-21,170.54

Finding the Fourth Proportional to 30,117.86, 41,548.73 and 21,170.54

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Solution

The fourth proportional to 30,117.86, 41,548.73 and 21,170.54 is: 29,205.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,117.86 : 41,548.73 = 21,170.54 : x
  2. Step 2: Convert to fraction form
    30,117.86/41,548.73 = 21,170.54/x
  3. Step 3: Cross multiply
    30,117.86x = 41,548.73 × 21,170.54
  4. Step 4: Simplify right side
    30,117.86x = 879,609,048.43
  5. Step 5: Solve for x
    x = 879,609,048.43/30,117.86
  6. Step 6: Final answer
    x = 29,205.56

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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.