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Finding the Fourth Proportional to 20,618.65, 30,904.07 and 9,501.98

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Solution

The fourth proportional to 20,618.65, 30,904.07 and 9,501.98 is: 14,241.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.65 : 30,904.07 = 9,501.98 : x
  2. Step 2: Convert to fraction form
    20,618.65/30,904.07 = 9,501.98/x
  3. Step 3: Cross multiply
    20,618.65x = 30,904.07 × 9,501.98
  4. Step 4: Simplify right side
    20,618.65x = 293,649,884.81
  5. Step 5: Solve for x
    x = 293,649,884.81/20,618.65
  6. Step 6: Final answer
    x = 14,241.96

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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.