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Finding the Fourth Proportional to 13,425.52, 20,241.36 and 12,522.08

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Solution

The fourth proportional to 13,425.52, 20,241.36 and 12,522.08 is: 18,879.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.52 : 20,241.36 = 12,522.08 : x
  2. Step 2: Convert to fraction form
    13,425.52/20,241.36 = 12,522.08/x
  3. Step 3: Cross multiply
    13,425.52x = 20,241.36 × 12,522.08
  4. Step 4: Simplify right side
    13,425.52x = 253,463,929.23
  5. Step 5: Solve for x
    x = 253,463,929.23/13,425.52
  6. Step 6: Final answer
    x = 18,879.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.