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Finding the Fourth Proportional to 14,958.19, 20,642.20 and 8,243.83

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Solution

The fourth proportional to 14,958.19, 20,642.20 and 8,243.83 is: 11,376.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,958.19 : 20,642.20 = 8,243.83 : x
  2. Step 2: Convert to fraction form
    14,958.19/20,642.20 = 8,243.83/x
  3. Step 3: Cross multiply
    14,958.19x = 20,642.20 × 8,243.83
  4. Step 4: Simplify right side
    14,958.19x = 170,170,787.63
  5. Step 5: Solve for x
    x = 170,170,787.63/14,958.19
  6. Step 6: Final answer
    x = 11,376.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.