Home / 20,859.62-28,788.68-11,908.42

Finding the Fourth Proportional to 20,859.62, 28,788.68 and 11,908.42

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Solution

The fourth proportional to 20,859.62, 28,788.68 and 11,908.42 is: 16,434.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.62 : 28,788.68 = 11,908.42 : x
  2. Step 2: Convert to fraction form
    20,859.62/28,788.68 = 11,908.42/x
  3. Step 3: Cross multiply
    20,859.62x = 28,788.68 × 11,908.42
  4. Step 4: Simplify right side
    20,859.62x = 342,827,650.48
  5. Step 5: Solve for x
    x = 342,827,650.48/20,859.62
  6. Step 6: Final answer
    x = 16,434.99

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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.