Home / 29,727.36-40,986-21,239.64

Finding the Fourth Proportional to 29,727.36, 40,986 and 21,239.64

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Solution

The fourth proportional to 29,727.36, 40,986 and 21,239.64 is: 29,283.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,727.36 : 40,986 = 21,239.64 : x
  2. Step 2: Convert to fraction form
    29,727.36/40,986 = 21,239.64/x
  3. Step 3: Cross multiply
    29,727.36x = 40,986 × 21,239.64
  4. Step 4: Simplify right side
    29,727.36x = 870,527,885.04
  5. Step 5: Solve for x
    x = 870,527,885.04/29,727.36
  6. Step 6: Final answer
    x = 29,283.73

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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.