Home / 19,415.66-29,128.68-6,936.98

Finding the Fourth Proportional to 19,415.66, 29,128.68 and 6,936.98

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Solution

The fourth proportional to 19,415.66, 29,128.68 and 6,936.98 is: 10,407.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,415.66 : 29,128.68 = 6,936.98 : x
  2. Step 2: Convert to fraction form
    19,415.66/29,128.68 = 6,936.98/x
  3. Step 3: Cross multiply
    19,415.66x = 29,128.68 × 6,936.98
  4. Step 4: Simplify right side
    19,415.66x = 202,065,070.59
  5. Step 5: Solve for x
    x = 202,065,070.59/19,415.66
  6. Step 6: Final answer
    x = 10,407.32

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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.