Home / 43,271.78-64,917.05-13,286.12

Finding the Fourth Proportional to 43,271.78, 64,917.05 and 13,286.12

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Solution

The fourth proportional to 43,271.78, 64,917.05 and 13,286.12 is: 19,932.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,271.78 : 64,917.05 = 13,286.12 : x
  2. Step 2: Convert to fraction form
    43,271.78/64,917.05 = 13,286.12/x
  3. Step 3: Cross multiply
    43,271.78x = 64,917.05 × 13,286.12
  4. Step 4: Simplify right side
    43,271.78x = 862,495,716.35
  5. Step 5: Solve for x
    x = 862,495,716.35/43,271.78
  6. Step 6: Final answer
    x = 19,932.06

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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.