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Finding the Fourth Proportional to 9,993.89, 14,990.84 and 3,421.95

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Solution

The fourth proportional to 9,993.89, 14,990.84 and 3,421.95 is: 5,132.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,993.89 : 14,990.84 = 3,421.95 : x
  2. Step 2: Convert to fraction form
    9,993.89/14,990.84 = 3,421.95/x
  3. Step 3: Cross multiply
    9,993.89x = 14,990.84 × 3,421.95
  4. Step 4: Simplify right side
    9,993.89x = 51,297,887.83
  5. Step 5: Solve for x
    x = 51,297,887.83/9,993.89
  6. Step 6: Final answer
    x = 5,132.93

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Similar ratio
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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.