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Finding the Fourth Proportional to 43,573.64, 65,371.41 and 12,408.89

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Solution

The fourth proportional to 43,573.64, 65,371.41 and 12,408.89 is: 18,616.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,573.64 : 65,371.41 = 12,408.89 : x
  2. Step 2: Convert to fraction form
    43,573.64/65,371.41 = 12,408.89/x
  3. Step 3: Cross multiply
    43,573.64x = 65,371.41 × 12,408.89
  4. Step 4: Simplify right side
    43,573.64x = 811,186,308.98
  5. Step 5: Solve for x
    x = 811,186,308.98/43,573.64
  6. Step 6: Final answer
    x = 18,616.45

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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.