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Finding the Fourth Proportional to 13,236.60, 19,862.10 and 5,446.20

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Solution

The fourth proportional to 13,236.60, 19,862.10 and 5,446.20 is: 8,172.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.60 : 19,862.10 = 5,446.20 : x
  2. Step 2: Convert to fraction form
    13,236.60/19,862.10 = 5,446.20/x
  3. Step 3: Cross multiply
    13,236.60x = 19,862.10 × 5,446.20
  4. Step 4: Simplify right side
    13,236.60x = 108,172,969.02
  5. Step 5: Solve for x
    x = 108,172,969.02/13,236.60
  6. Step 6: Final answer
    x = 8,172.26

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1.5x scale

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.