Home / 15,588.05-21,511.31-8,514.45

Finding the Fourth Proportional to 15,588.05, 21,511.31 and 8,514.45

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Solution

The fourth proportional to 15,588.05, 21,511.31 and 8,514.45 is: 11,749.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,588.05 : 21,511.31 = 8,514.45 : x
  2. Step 2: Convert to fraction form
    15,588.05/21,511.31 = 8,514.45/x
  3. Step 3: Cross multiply
    15,588.05x = 21,511.31 × 8,514.45
  4. Step 4: Simplify right side
    15,588.05x = 183,156,930.86
  5. Step 5: Solve for x
    x = 183,156,930.86/15,588.05
  6. Step 6: Final answer
    x = 11,749.83

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1.5x scale

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.