Home / 15,275.82-21,090.15-11,731.98

Finding the Fourth Proportional to 15,275.82, 21,090.15 and 11,731.98

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Solution

The fourth proportional to 15,275.82, 21,090.15 and 11,731.98 is: 16,197.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,275.82 : 21,090.15 = 11,731.98 : x
  2. Step 2: Convert to fraction form
    15,275.82/21,090.15 = 11,731.98/x
  3. Step 3: Cross multiply
    15,275.82x = 21,090.15 × 11,731.98
  4. Step 4: Simplify right side
    15,275.82x = 247,429,218.00
  5. Step 5: Solve for x
    x = 247,429,218.00/15,275.82
  6. Step 6: Final answer
    x = 16,197.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.