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Finding the Fourth Proportional to 13,410.58, 20,113.50 and 3,550

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Solution

The fourth proportional to 13,410.58, 20,113.50 and 3,550 is: 5,324.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.58 : 20,113.50 = 3,550 : x
  2. Step 2: Convert to fraction form
    13,410.58/20,113.50 = 3,550/x
  3. Step 3: Cross multiply
    13,410.58x = 20,113.50 × 3,550
  4. Step 4: Simplify right side
    13,410.58x = 71,402,925
  5. Step 5: Solve for x
    x = 71,402,925/13,410.58
  6. Step 6: Final answer
    x = 5,324.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.