Home / 43,282.68-64,918.98-12,120.36

Finding the Fourth Proportional to 43,282.68, 64,918.98 and 12,120.36

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Solution

The fourth proportional to 43,282.68, 64,918.98 and 12,120.36 is: 18,179.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,282.68 : 64,918.98 = 12,120.36 : x
  2. Step 2: Convert to fraction form
    43,282.68/64,918.98 = 12,120.36/x
  3. Step 3: Cross multiply
    43,282.68x = 64,918.98 × 12,120.36
  4. Step 4: Simplify right side
    43,282.68x = 786,841,408.43
  5. Step 5: Solve for x
    x = 786,841,408.43/43,282.68
  6. Step 6: Final answer
    x = 18,179.13

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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.