Home / 13,516.80-18,641.52-11,272.56

Finding the Fourth Proportional to 13,516.80, 18,641.52 and 11,272.56

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Solution

The fourth proportional to 13,516.80, 18,641.52 and 11,272.56 is: 15,546.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.80 : 18,641.52 = 11,272.56 : x
  2. Step 2: Convert to fraction form
    13,516.80/18,641.52 = 11,272.56/x
  3. Step 3: Cross multiply
    13,516.80x = 18,641.52 × 11,272.56
  4. Step 4: Simplify right side
    13,516.80x = 210,137,652.69
  5. Step 5: Solve for x
    x = 210,137,652.69/13,516.80
  6. Step 6: Final answer
    x = 15,546.41

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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.