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Finding the Fourth Proportional to 43,491.52, 65,237.90 and 12,326.78

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Solution

The fourth proportional to 43,491.52, 65,237.90 and 12,326.78 is: 18,490.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,491.52 : 65,237.90 = 12,326.78 : x
  2. Step 2: Convert to fraction form
    43,491.52/65,237.90 = 12,326.78/x
  3. Step 3: Cross multiply
    43,491.52x = 65,237.90 × 12,326.78
  4. Step 4: Simplify right side
    43,491.52x = 804,173,240.96
  5. Step 5: Solve for x
    x = 804,173,240.96/43,491.52
  6. Step 6: Final answer
    x = 18,490.35

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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.