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Finding the Fourth Proportional to 13,421.52, 20,103.48 and 13,052.88

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Solution

The fourth proportional to 13,421.52, 20,103.48 and 13,052.88 is: 19,551.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.52 : 20,103.48 = 13,052.88 : x
  2. Step 2: Convert to fraction form
    13,421.52/20,103.48 = 13,052.88/x
  3. Step 3: Cross multiply
    13,421.52x = 20,103.48 × 13,052.88
  4. Step 4: Simplify right side
    13,421.52x = 262,408,312.02
  5. Step 5: Solve for x
    x = 262,408,312.02/13,421.52
  6. Step 6: Final answer
    x = 19,551.31

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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.