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Finding the Fourth Proportional to 9,408.60, 14,112.90 and 9,165.60

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Solution

The fourth proportional to 9,408.60, 14,112.90 and 9,165.60 is: 13,748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,408.60 : 14,112.90 = 9,165.60 : x
  2. Step 2: Convert to fraction form
    9,408.60/14,112.90 = 9,165.60/x
  3. Step 3: Cross multiply
    9,408.60x = 14,112.90 × 9,165.60
  4. Step 4: Simplify right side
    9,408.60x = 129,353,196.24
  5. Step 5: Solve for x
    x = 129,353,196.24/9,408.60
  6. Step 6: Final answer
    x = 13,748.40

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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.