Home / 12,838.66-17,716.26-7,387.91

Finding the Fourth Proportional to 12,838.66, 17,716.26 and 7,387.91

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Solution

The fourth proportional to 12,838.66, 17,716.26 and 7,387.91 is: 10,194.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,838.66 : 17,716.26 = 7,387.91 : x
  2. Step 2: Convert to fraction form
    12,838.66/17,716.26 = 7,387.91/x
  3. Step 3: Cross multiply
    12,838.66x = 17,716.26 × 7,387.91
  4. Step 4: Simplify right side
    12,838.66x = 130,886,088.03
  5. Step 5: Solve for x
    x = 130,886,088.03/12,838.66
  6. Step 6: Final answer
    x = 10,194.68

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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.