Home / 21,163.58-31,742.12-5,582.42

Finding the Fourth Proportional to 21,163.58, 31,742.12 and 5,582.42

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Solution

The fourth proportional to 21,163.58, 31,742.12 and 5,582.42 is: 8,372.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.58 : 31,742.12 = 5,582.42 : x
  2. Step 2: Convert to fraction form
    21,163.58/31,742.12 = 5,582.42/x
  3. Step 3: Cross multiply
    21,163.58x = 31,742.12 × 5,582.42
  4. Step 4: Simplify right side
    21,163.58x = 177,197,658.91
  5. Step 5: Solve for x
    x = 177,197,658.91/21,163.58
  6. Step 6: Final answer
    x = 8,372.77

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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.