Home / 21,255.76-29,333.64-13,295.44

Finding the Fourth Proportional to 21,255.76, 29,333.64 and 13,295.44

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Solution

The fourth proportional to 21,255.76, 29,333.64 and 13,295.44 is: 18,348.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.76 : 29,333.64 = 13,295.44 : x
  2. Step 2: Convert to fraction form
    21,255.76/29,333.64 = 13,295.44/x
  3. Step 3: Cross multiply
    21,255.76x = 29,333.64 × 13,295.44
  4. Step 4: Simplify right side
    21,255.76x = 390,003,650.60
  5. Step 5: Solve for x
    x = 390,003,650.60/21,255.76
  6. Step 6: Final answer
    x = 18,348.14

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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.