Home / 18,781.67-28,175.86-6,305.76

Finding the Fourth Proportional to 18,781.67, 28,175.86 and 6,305.76

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Solution

The fourth proportional to 18,781.67, 28,175.86 and 6,305.76 is: 9,459.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781.67 : 28,175.86 = 6,305.76 : x
  2. Step 2: Convert to fraction form
    18,781.67/28,175.86 = 6,305.76/x
  3. Step 3: Cross multiply
    18,781.67x = 28,175.86 × 6,305.76
  4. Step 4: Simplify right side
    18,781.67x = 177,670,210.95
  5. Step 5: Solve for x
    x = 177,670,210.95/18,781.67
  6. Step 6: Final answer
    x = 9,459.77

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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.