Home / 28,658.24-39,548.52-15,911.88

Finding the Fourth Proportional to 28,658.24, 39,548.52 and 15,911.88

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Solution

The fourth proportional to 28,658.24, 39,548.52 and 15,911.88 is: 21,958.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,658.24 : 39,548.52 = 15,911.88 : x
  2. Step 2: Convert to fraction form
    28,658.24/39,548.52 = 15,911.88/x
  3. Step 3: Cross multiply
    28,658.24x = 39,548.52 × 15,911.88
  4. Step 4: Simplify right side
    28,658.24x = 629,291,304.42
  5. Step 5: Solve for x
    x = 629,291,304.42/28,658.24
  6. Step 6: Final answer
    x = 21,958.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.