Home / 43,149.84-64,722.60-11,985.36

Finding the Fourth Proportional to 43,149.84, 64,722.60 and 11,985.36

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Solution

The fourth proportional to 43,149.84, 64,722.60 and 11,985.36 is: 17,977.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,149.84 : 64,722.60 = 11,985.36 : x
  2. Step 2: Convert to fraction form
    43,149.84/64,722.60 = 11,985.36/x
  3. Step 3: Cross multiply
    43,149.84x = 64,722.60 × 11,985.36
  4. Step 4: Simplify right side
    43,149.84x = 775,723,661.14
  5. Step 5: Solve for x
    x = 775,723,661.14/43,149.84
  6. Step 6: Final answer
    x = 17,977.44

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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.