Home / 20,423.70-28,183.65-11,471.58

Finding the Fourth Proportional to 20,423.70, 28,183.65 and 11,471.58

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Solution

The fourth proportional to 20,423.70, 28,183.65 and 11,471.58 is: 15,830.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.70 : 28,183.65 = 11,471.58 : x
  2. Step 2: Convert to fraction form
    20,423.70/28,183.65 = 11,471.58/x
  3. Step 3: Cross multiply
    20,423.70x = 28,183.65 × 11,471.58
  4. Step 4: Simplify right side
    20,423.70x = 323,310,995.67
  5. Step 5: Solve for x
    x = 323,310,995.67/20,423.70
  6. Step 6: Final answer
    x = 15,830.19

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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.