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Finding the Fourth Proportional to 43,647.40, 65,463.18 and 12,475

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Solution

The fourth proportional to 43,647.40, 65,463.18 and 12,475 is: 18,710.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,647.40 : 65,463.18 = 12,475 : x
  2. Step 2: Convert to fraction form
    43,647.40/65,463.18 = 12,475/x
  3. Step 3: Cross multiply
    43,647.40x = 65,463.18 × 12,475
  4. Step 4: Simplify right side
    43,647.40x = 816,653,170.50
  5. Step 5: Solve for x
    x = 816,653,170.50/43,647.40
  6. Step 6: Final answer
    x = 18,710.24

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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.