Home / 10,658.12-15,990.21-4,418.42

Finding the Fourth Proportional to 10,658.12, 15,990.21 and 4,418.42

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Solution

The fourth proportional to 10,658.12, 15,990.21 and 4,418.42 is: 6,628.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,658.12 : 15,990.21 = 4,418.42 : x
  2. Step 2: Convert to fraction form
    10,658.12/15,990.21 = 4,418.42/x
  3. Step 3: Cross multiply
    10,658.12x = 15,990.21 × 4,418.42
  4. Step 4: Simplify right side
    10,658.12x = 70,651,383.72
  5. Step 5: Solve for x
    x = 70,651,383.72/10,658.12
  6. Step 6: Final answer
    x = 6,628.88

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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.