Home / 20,423.62-30,631.74-5,628.87

Finding the Fourth Proportional to 20,423.62, 30,631.74 and 5,628.87

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Solution

The fourth proportional to 20,423.62, 30,631.74 and 5,628.87 is: 8,442.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.62 : 30,631.74 = 5,628.87 : x
  2. Step 2: Convert to fraction form
    20,423.62/30,631.74 = 5,628.87/x
  3. Step 3: Cross multiply
    20,423.62x = 30,631.74 × 5,628.87
  4. Step 4: Simplify right side
    20,423.62x = 172,422,022.57
  5. Step 5: Solve for x
    x = 172,422,022.57/20,423.62
  6. Step 6: Final answer
    x = 8,442.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.