Home / 21,103.52-29,122.47-11,671.88

Finding the Fourth Proportional to 21,103.52, 29,122.47 and 11,671.88

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Solution

The fourth proportional to 21,103.52, 29,122.47 and 11,671.88 is: 16,106.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.52 : 29,122.47 = 11,671.88 : x
  2. Step 2: Convert to fraction form
    21,103.52/29,122.47 = 11,671.88/x
  3. Step 3: Cross multiply
    21,103.52x = 29,122.47 × 11,671.88
  4. Step 4: Simplify right side
    21,103.52x = 339,913,829.53
  5. Step 5: Solve for x
    x = 339,913,829.53/21,103.52
  6. Step 6: Final answer
    x = 16,106.98

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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.