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Finding the Fourth Proportional to 13,454.72, 20,308.45 and 13,454.72

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Solution

The fourth proportional to 13,454.72, 20,308.45 and 13,454.72 is: 20,308.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,454.72 : 20,308.45 = 13,454.72 : x
  2. Step 2: Convert to fraction form
    13,454.72/20,308.45 = 13,454.72/x
  3. Step 3: Cross multiply
    13,454.72x = 20,308.45 × 13,454.72
  4. Step 4: Simplify right side
    13,454.72x = 273,244,408.01
  5. Step 5: Solve for x
    x = 273,244,408.01/13,454.72
  6. Step 6: Final answer
    x = 20,308.45

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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.