Home / 20,310.40-30,480.57-9,636.80

Finding the Fourth Proportional to 20,310.40, 30,480.57 and 9,636.80

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Solution

The fourth proportional to 20,310.40, 30,480.57 and 9,636.80 is: 14,462.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.40 : 30,480.57 = 9,636.80 : x
  2. Step 2: Convert to fraction form
    20,310.40/30,480.57 = 9,636.80/x
  3. Step 3: Cross multiply
    20,310.40x = 30,480.57 × 9,636.80
  4. Step 4: Simplify right side
    20,310.40x = 293,734,956.39
  5. Step 5: Solve for x
    x = 293,734,956.39/20,310.40
  6. Step 6: Final answer
    x = 14,462.29

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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.