Home / 39,628.28-54,686.75-21,724.04

Finding the Fourth Proportional to 39,628.28, 54,686.75 and 21,724.04

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Solution

The fourth proportional to 39,628.28, 54,686.75 and 21,724.04 is: 29,979.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,628.28 : 54,686.75 = 21,724.04 : x
  2. Step 2: Convert to fraction form
    39,628.28/54,686.75 = 21,724.04/x
  3. Step 3: Cross multiply
    39,628.28x = 54,686.75 × 21,724.04
  4. Step 4: Simplify right side
    39,628.28x = 1,188,016,762.42
  5. Step 5: Solve for x
    x = 1,188,016,762.42/39,628.28
  6. Step 6: Final answer
    x = 29,979.02

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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.