Home / 43,007.31-64,512.67-13,425.15

Finding the Fourth Proportional to 43,007.31, 64,512.67 and 13,425.15

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Solution

The fourth proportional to 43,007.31, 64,512.67 and 13,425.15 is: 20,138.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,007.31 : 64,512.67 = 13,425.15 : x
  2. Step 2: Convert to fraction form
    43,007.31/64,512.67 = 13,425.15/x
  3. Step 3: Cross multiply
    43,007.31x = 64,512.67 × 13,425.15
  4. Step 4: Simplify right side
    43,007.31x = 866,091,949.09
  5. Step 5: Solve for x
    x = 866,091,949.09/43,007.31
  6. Step 6: Final answer
    x = 20,138.25

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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.