Home / 20,306.43-28,021.58-11,354.67

Finding the Fourth Proportional to 20,306.43, 28,021.58 and 11,354.67

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Solution

The fourth proportional to 20,306.43, 28,021.58 and 11,354.67 is: 15,668.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.43 : 28,021.58 = 11,354.67 : x
  2. Step 2: Convert to fraction form
    20,306.43/28,021.58 = 11,354.67/x
  3. Step 3: Cross multiply
    20,306.43x = 28,021.58 × 11,354.67
  4. Step 4: Simplify right side
    20,306.43x = 318,175,737.01
  5. Step 5: Solve for x
    x = 318,175,737.01/20,306.43
  6. Step 6: Final answer
    x = 15,668.72

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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.