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Finding the Fourth Proportional to 20,351.09, 30,502.03 and 10,484.99

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Solution

The fourth proportional to 20,351.09, 30,502.03 and 10,484.99 is: 15,714.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.09 : 30,502.03 = 10,484.99 : x
  2. Step 2: Convert to fraction form
    20,351.09/30,502.03 = 10,484.99/x
  3. Step 3: Cross multiply
    20,351.09x = 30,502.03 × 10,484.99
  4. Step 4: Simplify right side
    20,351.09x = 319,813,479.53
  5. Step 5: Solve for x
    x = 319,813,479.53/20,351.09
  6. Step 6: Final answer
    x = 15,714.81

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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.