Home / 13,415.45-20,116.64-4,053.66

Finding the Fourth Proportional to 13,415.45, 20,116.64 and 4,053.66

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Solution

The fourth proportional to 13,415.45, 20,116.64 and 4,053.66 is: 6,078.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.45 : 20,116.64 = 4,053.66 : x
  2. Step 2: Convert to fraction form
    13,415.45/20,116.64 = 4,053.66/x
  3. Step 3: Cross multiply
    13,415.45x = 20,116.64 × 4,053.66
  4. Step 4: Simplify right side
    13,415.45x = 81,545,998.63
  5. Step 5: Solve for x
    x = 81,545,998.63/13,415.45
  6. Step 6: Final answer
    x = 6,078.52

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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.