Home / 20,596.46-28,423.79-11,398.12

Finding the Fourth Proportional to 20,596.46, 28,423.79 and 11,398.12

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Solution

The fourth proportional to 20,596.46, 28,423.79 and 11,398.12 is: 15,729.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,596.46 : 28,423.79 = 11,398.12 : x
  2. Step 2: Convert to fraction form
    20,596.46/28,423.79 = 11,398.12/x
  3. Step 3: Cross multiply
    20,596.46x = 28,423.79 × 11,398.12
  4. Step 4: Simplify right side
    20,596.46x = 323,977,712.28
  5. Step 5: Solve for x
    x = 323,977,712.28/20,596.46
  6. Step 6: Final answer
    x = 15,729.78

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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.