Home / 15,554.58-21,456-11,299.92

Finding the Fourth Proportional to 15,554.58, 21,456 and 11,299.92

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Solution

The fourth proportional to 15,554.58, 21,456 and 11,299.92 is: 15,587.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,554.58 : 21,456 = 11,299.92 : x
  2. Step 2: Convert to fraction form
    15,554.58/21,456 = 11,299.92/x
  3. Step 3: Cross multiply
    15,554.58x = 21,456 × 11,299.92
  4. Step 4: Simplify right side
    15,554.58x = 242,451,083.52
  5. Step 5: Solve for x
    x = 242,451,083.52/15,554.58
  6. Step 6: Final answer
    x = 15,587.12

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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.