Home / 20,306.18-28,021.23-11,354.42

Finding the Fourth Proportional to 20,306.18, 28,021.23 and 11,354.42

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Solution

The fourth proportional to 20,306.18, 28,021.23 and 11,354.42 is: 15,668.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.18 : 28,021.23 = 11,354.42 : x
  2. Step 2: Convert to fraction form
    20,306.18/28,021.23 = 11,354.42/x
  3. Step 3: Cross multiply
    20,306.18x = 28,021.23 × 11,354.42
  4. Step 4: Simplify right side
    20,306.18x = 318,164,814.34
  5. Step 5: Solve for x
    x = 318,164,814.34/20,306.18
  6. Step 6: Final answer
    x = 15,668.37

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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.