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Finding the Fourth Proportional to 20,301, 30,460.62 and 12,903.54

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Solution

The fourth proportional to 20,301, 30,460.62 and 12,903.54 is: 19,361.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301 : 30,460.62 = 12,903.54 : x
  2. Step 2: Convert to fraction form
    20,301/30,460.62 = 12,903.54/x
  3. Step 3: Cross multiply
    20,301x = 30,460.62 × 12,903.54
  4. Step 4: Simplify right side
    20,301x = 393,049,828.59
  5. Step 5: Solve for x
    x = 393,049,828.59/20,301
  6. Step 6: Final answer
    x = 19,361.11

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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.