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Finding the Fourth Proportional to 13,059.84, 18,019.08 and 8,348.88

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Solution

The fourth proportional to 13,059.84, 18,019.08 and 8,348.88 is: 11,519.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,059.84 : 18,019.08 = 8,348.88 : x
  2. Step 2: Convert to fraction form
    13,059.84/18,019.08 = 8,348.88/x
  3. Step 3: Cross multiply
    13,059.84x = 18,019.08 × 8,348.88
  4. Step 4: Simplify right side
    13,059.84x = 150,439,136.63
  5. Step 5: Solve for x
    x = 150,439,136.63/13,059.84
  6. Step 6: Final answer
    x = 11,519.22

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1.5x scale

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.