Home / 20,461.62-28,217.79-18,934.38

Finding the Fourth Proportional to 20,461.62, 28,217.79 and 18,934.38

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Solution

The fourth proportional to 20,461.62, 28,217.79 and 18,934.38 is: 26,111.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.62 : 28,217.79 = 18,934.38 : x
  2. Step 2: Convert to fraction form
    20,461.62/28,217.79 = 18,934.38/x
  3. Step 3: Cross multiply
    20,461.62x = 28,217.79 × 18,934.38
  4. Step 4: Simplify right side
    20,461.62x = 534,286,358.62
  5. Step 5: Solve for x
    x = 534,286,358.62/20,461.62
  6. Step 6: Final answer
    x = 26,111.64

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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.