Home / 13,135.58-19,643.49-9,806.21

Finding the Fourth Proportional to 13,135.58, 19,643.49 and 9,806.21

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Solution

The fourth proportional to 13,135.58, 19,643.49 and 9,806.21 is: 14,664.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.58 : 19,643.49 = 9,806.21 : x
  2. Step 2: Convert to fraction form
    13,135.58/19,643.49 = 9,806.21/x
  3. Step 3: Cross multiply
    13,135.58x = 19,643.49 × 9,806.21
  4. Step 4: Simplify right side
    13,135.58x = 192,628,089.86
  5. Step 5: Solve for x
    x = 192,628,089.86/13,135.58
  6. Step 6: Final answer
    x = 14,664.61

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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.