Home / 20,423.16-30,621.39-8,584.49

Finding the Fourth Proportional to 20,423.16, 30,621.39 and 8,584.49

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Solution

The fourth proportional to 20,423.16, 30,621.39 and 8,584.49 is: 12,871.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.16 : 30,621.39 = 8,584.49 : x
  2. Step 2: Convert to fraction form
    20,423.16/30,621.39 = 8,584.49/x
  3. Step 3: Cross multiply
    20,423.16x = 30,621.39 × 8,584.49
  4. Step 4: Simplify right side
    20,423.16x = 262,868,863.13
  5. Step 5: Solve for x
    x = 262,868,863.13/20,423.16
  6. Step 6: Final answer
    x = 12,871.12

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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.