Home / 13,721.52-20,582.28-3,860.80

Finding the Fourth Proportional to 13,721.52, 20,582.28 and 3,860.80

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Solution

The fourth proportional to 13,721.52, 20,582.28 and 3,860.80 is: 5,791.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.52 : 20,582.28 = 3,860.80 : x
  2. Step 2: Convert to fraction form
    13,721.52/20,582.28 = 3,860.80/x
  3. Step 3: Cross multiply
    13,721.52x = 20,582.28 × 3,860.80
  4. Step 4: Simplify right side
    13,721.52x = 79,464,066.62
  5. Step 5: Solve for x
    x = 79,464,066.62/13,721.52
  6. Step 6: Final answer
    x = 5,791.20

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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.