Home / 43,107.26-64,651.50-13,521.20

Finding the Fourth Proportional to 43,107.26, 64,651.50 and 13,521.20

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Solution

The fourth proportional to 43,107.26, 64,651.50 and 13,521.20 is: 20,278.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,107.26 : 64,651.50 = 13,521.20 : x
  2. Step 2: Convert to fraction form
    43,107.26/64,651.50 = 13,521.20/x
  3. Step 3: Cross multiply
    43,107.26x = 64,651.50 × 13,521.20
  4. Step 4: Simplify right side
    43,107.26x = 874,165,538.54
  5. Step 5: Solve for x
    x = 874,165,538.54/43,107.26
  6. Step 6: Final answer
    x = 20,278.85

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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.