Home / 13,213.10-19,818.63-6,191.28

Finding the Fourth Proportional to 13,213.10, 19,818.63 and 6,191.28

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Solution

The fourth proportional to 13,213.10, 19,818.63 and 6,191.28 is: 9,286.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.10 : 19,818.63 = 6,191.28 : x
  2. Step 2: Convert to fraction form
    13,213.10/19,818.63 = 6,191.28/x
  3. Step 3: Cross multiply
    13,213.10x = 19,818.63 × 6,191.28
  4. Step 4: Simplify right side
    13,213.10x = 122,702,687.55
  5. Step 5: Solve for x
    x = 122,702,687.55/13,213.10
  6. Step 6: Final answer
    x = 9,286.44

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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.