Home / 13,548.27-18,697.31-8,172.39

Finding the Fourth Proportional to 13,548.27, 18,697.31 and 8,172.39

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Solution

The fourth proportional to 13,548.27, 18,697.31 and 8,172.39 is: 11,278.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,548.27 : 18,697.31 = 8,172.39 : x
  2. Step 2: Convert to fraction form
    13,548.27/18,697.31 = 8,172.39/x
  3. Step 3: Cross multiply
    13,548.27x = 18,697.31 × 8,172.39
  4. Step 4: Simplify right side
    13,548.27x = 152,801,709.27
  5. Step 5: Solve for x
    x = 152,801,709.27/13,548.27
  6. Step 6: Final answer
    x = 11,278.32

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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.