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Finding the Fourth Proportional to 13,020.55, 17,968.02 and 7,355.88

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Solution

The fourth proportional to 13,020.55, 17,968.02 and 7,355.88 is: 10,150.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.55 : 17,968.02 = 7,355.88 : x
  2. Step 2: Convert to fraction form
    13,020.55/17,968.02 = 7,355.88/x
  3. Step 3: Cross multiply
    13,020.55x = 17,968.02 × 7,355.88
  4. Step 4: Simplify right side
    13,020.55x = 132,170,592.06
  5. Step 5: Solve for x
    x = 132,170,592.06/13,020.55
  6. Step 6: Final answer
    x = 10,150.92

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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.