Home / 21,127.53-29,156.45-11,567.82

Finding the Fourth Proportional to 21,127.53, 29,156.45 and 11,567.82

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Solution

The fourth proportional to 21,127.53, 29,156.45 and 11,567.82 is: 15,963.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.53 : 29,156.45 = 11,567.82 : x
  2. Step 2: Convert to fraction form
    21,127.53/29,156.45 = 11,567.82/x
  3. Step 3: Cross multiply
    21,127.53x = 29,156.45 × 11,567.82
  4. Step 4: Simplify right side
    21,127.53x = 337,276,565.44
  5. Step 5: Solve for x
    x = 337,276,565.44/21,127.53
  6. Step 6: Final answer
    x = 15,963.84

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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.