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Finding the Fourth Proportional to 20,563.60, 30,852.60 and 8,880.40

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Solution

The fourth proportional to 20,563.60, 30,852.60 and 8,880.40 is: 13,323.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.60 : 30,852.60 = 8,880.40 : x
  2. Step 2: Convert to fraction form
    20,563.60/30,852.60 = 8,880.40/x
  3. Step 3: Cross multiply
    20,563.60x = 30,852.60 × 8,880.40
  4. Step 4: Simplify right side
    20,563.60x = 273,983,429.04
  5. Step 5: Solve for x
    x = 273,983,429.04/20,563.60
  6. Step 6: Final answer
    x = 13,323.71

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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.