Home / 39,701.12-54,786.86-21,795.99

Finding the Fourth Proportional to 39,701.12, 54,786.86 and 21,795.99

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Solution

The fourth proportional to 39,701.12, 54,786.86 and 21,795.99 is: 30,078.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,701.12 : 54,786.86 = 21,795.99 : x
  2. Step 2: Convert to fraction form
    39,701.12/54,786.86 = 21,795.99/x
  3. Step 3: Cross multiply
    39,701.12x = 54,786.86 × 21,795.99
  4. Step 4: Simplify right side
    39,701.12x = 1,194,133,743.71
  5. Step 5: Solve for x
    x = 1,194,133,743.71/39,701.12
  6. Step 6: Final answer
    x = 30,078.09

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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.