Home / 20,658.63-30,987.68-5,076.39

Finding the Fourth Proportional to 20,658.63, 30,987.68 and 5,076.39

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Solution

The fourth proportional to 20,658.63, 30,987.68 and 5,076.39 is: 7,614.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.63 : 30,987.68 = 5,076.39 : x
  2. Step 2: Convert to fraction form
    20,658.63/30,987.68 = 5,076.39/x
  3. Step 3: Cross multiply
    20,658.63x = 30,987.68 × 5,076.39
  4. Step 4: Simplify right side
    20,658.63x = 157,305,523.49
  5. Step 5: Solve for x
    x = 157,305,523.49/20,658.63
  6. Step 6: Final answer
    x = 7,614.52

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1.5x scale

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.