Home / 39,742.79-54,846.40-21,838.44

Finding the Fourth Proportional to 39,742.79, 54,846.40 and 21,838.44

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Solution

The fourth proportional to 39,742.79, 54,846.40 and 21,838.44 is: 30,137.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,742.79 : 54,846.40 = 21,838.44 : x
  2. Step 2: Convert to fraction form
    39,742.79/54,846.40 = 21,838.44/x
  3. Step 3: Cross multiply
    39,742.79x = 54,846.40 × 21,838.44
  4. Step 4: Simplify right side
    39,742.79x = 1,197,759,815.62
  5. Step 5: Solve for x
    x = 1,197,759,815.62/39,742.79
  6. Step 6: Final answer
    x = 30,137.79

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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.