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Finding the Fourth Proportional to 12,614, 18,903.90 and 4,818.56

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Solution

The fourth proportional to 12,614, 18,903.90 and 4,818.56 is: 7,221.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,614 : 18,903.90 = 4,818.56 : x
  2. Step 2: Convert to fraction form
    12,614/18,903.90 = 4,818.56/x
  3. Step 3: Cross multiply
    12,614x = 18,903.90 × 4,818.56
  4. Step 4: Simplify right side
    12,614x = 91,089,576.38
  5. Step 5: Solve for x
    x = 91,089,576.38/12,614
  6. Step 6: Final answer
    x = 7,221.31

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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.