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Finding the Fourth Proportional to 43,642.59, 65,463.90 and 12,477.84

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Solution

The fourth proportional to 43,642.59, 65,463.90 and 12,477.84 is: 18,716.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,642.59 : 65,463.90 = 12,477.84 : x
  2. Step 2: Convert to fraction form
    43,642.59/65,463.90 = 12,477.84/x
  3. Step 3: Cross multiply
    43,642.59x = 65,463.90 × 12,477.84
  4. Step 4: Simplify right side
    43,642.59x = 816,848,069.98
  5. Step 5: Solve for x
    x = 816,848,069.98/43,642.59
  6. Step 6: Final answer
    x = 18,716.76

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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.