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Finding the Fourth Proportional to 20,332.71, 30,488.83 and 8,483.41

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Solution

The fourth proportional to 20,332.71, 30,488.83 and 8,483.41 is: 12,720.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.71 : 30,488.83 = 8,483.41 : x
  2. Step 2: Convert to fraction form
    20,332.71/30,488.83 = 8,483.41/x
  3. Step 3: Cross multiply
    20,332.71x = 30,488.83 × 8,483.41
  4. Step 4: Simplify right side
    20,332.71x = 258,649,245.31
  5. Step 5: Solve for x
    x = 258,649,245.31/20,332.71
  6. Step 6: Final answer
    x = 12,720.84

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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.