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Finding the Fourth Proportional to 13,880.04, 20,820.02 and 5,672.04

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Solution

The fourth proportional to 13,880.04, 20,820.02 and 5,672.04 is: 8,508.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.04 : 20,820.02 = 5,672.04 : x
  2. Step 2: Convert to fraction form
    13,880.04/20,820.02 = 5,672.04/x
  3. Step 3: Cross multiply
    13,880.04x = 20,820.02 × 5,672.04
  4. Step 4: Simplify right side
    13,880.04x = 118,091,986.24
  5. Step 5: Solve for x
    x = 118,091,986.24/13,880.04
  6. Step 6: Final answer
    x = 8,508.04

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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.