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Finding the Fourth Proportional to 43,408.15, 65,116.90 and 13,819.07

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Solution

The fourth proportional to 43,408.15, 65,116.90 and 13,819.07 is: 20,730.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,408.15 : 65,116.90 = 13,819.07 : x
  2. Step 2: Convert to fraction form
    43,408.15/65,116.90 = 13,819.07/x
  3. Step 3: Cross multiply
    43,408.15x = 65,116.90 × 13,819.07
  4. Step 4: Simplify right side
    43,408.15x = 899,854,885.20
  5. Step 5: Solve for x
    x = 899,854,885.20/43,408.15
  6. Step 6: Final answer
    x = 20,730.09

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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.