Home / 43,326.72-64,980.48-12,161.28

Finding the Fourth Proportional to 43,326.72, 64,980.48 and 12,161.28

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Solution

The fourth proportional to 43,326.72, 64,980.48 and 12,161.28 is: 18,239.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,326.72 : 64,980.48 = 12,161.28 : x
  2. Step 2: Convert to fraction form
    43,326.72/64,980.48 = 12,161.28/x
  3. Step 3: Cross multiply
    43,326.72x = 64,980.48 × 12,161.28
  4. Step 4: Simplify right side
    43,326.72x = 790,245,811.81
  5. Step 5: Solve for x
    x = 790,245,811.81/43,326.72
  6. Step 6: Final answer
    x = 18,239.23

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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.