Home / 38,982.88-58,390.08-20,476

Finding the Fourth Proportional to 38,982.88, 58,390.08 and 20,476

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Solution

The fourth proportional to 38,982.88, 58,390.08 and 20,476 is: 30,669.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,982.88 : 58,390.08 = 20,476 : x
  2. Step 2: Convert to fraction form
    38,982.88/58,390.08 = 20,476/x
  3. Step 3: Cross multiply
    38,982.88x = 58,390.08 × 20,476
  4. Step 4: Simplify right side
    38,982.88x = 1,195,595,278.08
  5. Step 5: Solve for x
    x = 1,195,595,278.08/38,982.88
  6. Step 6: Final answer
    x = 30,669.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.