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Finding the Fourth Proportional to 15,588, 21,511.44 and 8,514.45

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Solution

The fourth proportional to 15,588, 21,511.44 and 8,514.45 is: 11,749.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,588 : 21,511.44 = 8,514.45 : x
  2. Step 2: Convert to fraction form
    15,588/21,511.44 = 8,514.45/x
  3. Step 3: Cross multiply
    15,588x = 21,511.44 × 8,514.45
  4. Step 4: Simplify right side
    15,588x = 183,158,080.31
  5. Step 5: Solve for x
    x = 183,158,080.31/15,588
  6. Step 6: Final answer
    x = 11,749.94

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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.