Home / 43,311.56-64,962.30-11,720.12

Finding the Fourth Proportional to 43,311.56, 64,962.30 and 11,720.12

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Solution

The fourth proportional to 43,311.56, 64,962.30 and 11,720.12 is: 17,578.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,311.56 : 64,962.30 = 11,720.12 : x
  2. Step 2: Convert to fraction form
    43,311.56/64,962.30 = 11,720.12/x
  3. Step 3: Cross multiply
    43,311.56x = 64,962.30 × 11,720.12
  4. Step 4: Simplify right side
    43,311.56x = 761,365,951.48
  5. Step 5: Solve for x
    x = 761,365,951.48/43,311.56
  6. Step 6: Final answer
    x = 17,578.82

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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.