Home / 21,508.48-29,676.50-12,550.87

Finding the Fourth Proportional to 21,508.48, 29,676.50 and 12,550.87

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Solution

The fourth proportional to 21,508.48, 29,676.50 and 12,550.87 is: 17,317.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,508.48 : 29,676.50 = 12,550.87 : x
  2. Step 2: Convert to fraction form
    21,508.48/29,676.50 = 12,550.87/x
  3. Step 3: Cross multiply
    21,508.48x = 29,676.50 × 12,550.87
  4. Step 4: Simplify right side
    21,508.48x = 372,465,745.17
  5. Step 5: Solve for x
    x = 372,465,745.17/21,508.48
  6. Step 6: Final answer
    x = 17,317.16

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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.