Home / 39,634.65-54,695.81-21,729.27

Finding the Fourth Proportional to 39,634.65, 54,695.81 and 21,729.27

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Solution

The fourth proportional to 39,634.65, 54,695.81 and 21,729.27 is: 29,986.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,634.65 : 54,695.81 = 21,729.27 : x
  2. Step 2: Convert to fraction form
    39,634.65/54,695.81 = 21,729.27/x
  3. Step 3: Cross multiply
    39,634.65x = 54,695.81 × 21,729.27
  4. Step 4: Simplify right side
    39,634.65x = 1,188,499,914.71
  5. Step 5: Solve for x
    x = 1,188,499,914.71/39,634.65
  6. Step 6: Final answer
    x = 29,986.39

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1.5x scale

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.