Home / 21,127.25-29,157.64-11,695.82

Finding the Fourth Proportional to 21,127.25, 29,157.64 and 11,695.82

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Solution

The fourth proportional to 21,127.25, 29,157.64 and 11,695.82 is: 16,141.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.25 : 29,157.64 = 11,695.82 : x
  2. Step 2: Convert to fraction form
    21,127.25/29,157.64 = 11,695.82/x
  3. Step 3: Cross multiply
    21,127.25x = 29,157.64 × 11,695.82
  4. Step 4: Simplify right side
    21,127.25x = 341,022,334.04
  5. Step 5: Solve for x
    x = 341,022,334.04/21,127.25
  6. Step 6: Final answer
    x = 16,141.35

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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.