Home / 30,657.50-42,305.97-17,911.86

Finding the Fourth Proportional to 30,657.50, 42,305.97 and 17,911.86

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Solution

The fourth proportional to 30,657.50, 42,305.97 and 17,911.86 is: 24,717.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,657.50 : 42,305.97 = 17,911.86 : x
  2. Step 2: Convert to fraction form
    30,657.50/42,305.97 = 17,911.86/x
  3. Step 3: Cross multiply
    30,657.50x = 42,305.97 × 17,911.86
  4. Step 4: Simplify right side
    30,657.50x = 757,778,520.33
  5. Step 5: Solve for x
    x = 757,778,520.33/30,657.50
  6. Step 6: Final answer
    x = 24,717.56

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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.