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Finding the Fourth Proportional to 13,050.72, 18,011.52 and 7,387.80

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Solution

The fourth proportional to 13,050.72, 18,011.52 and 7,387.80 is: 10,196.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,050.72 : 18,011.52 = 7,387.80 : x
  2. Step 2: Convert to fraction form
    13,050.72/18,011.52 = 7,387.80/x
  3. Step 3: Cross multiply
    13,050.72x = 18,011.52 × 7,387.80
  4. Step 4: Simplify right side
    13,050.72x = 133,065,507.46
  5. Step 5: Solve for x
    x = 133,065,507.46/13,050.72
  6. Step 6: Final answer
    x = 10,196.03

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.