Home / 43,330.72-64,986.48-12,165.28

Finding the Fourth Proportional to 43,330.72, 64,986.48 and 12,165.28

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Solution

The fourth proportional to 43,330.72, 64,986.48 and 12,165.28 is: 18,245.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,330.72 : 64,986.48 = 12,165.28 : x
  2. Step 2: Convert to fraction form
    43,330.72/64,986.48 = 12,165.28/x
  3. Step 3: Cross multiply
    43,330.72x = 64,986.48 × 12,165.28
  4. Step 4: Simplify right side
    43,330.72x = 790,578,725.41
  5. Step 5: Solve for x
    x = 790,578,725.41/43,330.72
  6. Step 6: Final answer
    x = 18,245.22

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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.