Home / 20,306.34-28,022.67-11,353.86

Finding the Fourth Proportional to 20,306.34, 28,022.67 and 11,353.86

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Solution

The fourth proportional to 20,306.34, 28,022.67 and 11,353.86 is: 15,668.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.34 : 28,022.67 = 11,353.86 : x
  2. Step 2: Convert to fraction form
    20,306.34/28,022.67 = 11,353.86/x
  3. Step 3: Cross multiply
    20,306.34x = 28,022.67 × 11,353.86
  4. Step 4: Simplify right side
    20,306.34x = 318,165,472.01
  5. Step 5: Solve for x
    x = 318,165,472.01/20,306.34
  6. Step 6: Final answer
    x = 15,668.28

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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.