Home / 20,311.62-28,029.44-11,359.95

Finding the Fourth Proportional to 20,311.62, 28,029.44 and 11,359.95

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Solution

The fourth proportional to 20,311.62, 28,029.44 and 11,359.95 is: 15,676.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,311.62 : 28,029.44 = 11,359.95 : x
  2. Step 2: Convert to fraction form
    20,311.62/28,029.44 = 11,359.95/x
  3. Step 3: Cross multiply
    20,311.62x = 28,029.44 × 11,359.95
  4. Step 4: Simplify right side
    20,311.62x = 318,412,980.13
  5. Step 5: Solve for x
    x = 318,412,980.13/20,311.62
  6. Step 6: Final answer
    x = 15,676.40

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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.