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Finding the Fourth Proportional to 13,057.65, 18,019.50 and 7,089.27

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Solution

The fourth proportional to 13,057.65, 18,019.50 and 7,089.27 is: 9,783.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,057.65 : 18,019.50 = 7,089.27 : x
  2. Step 2: Convert to fraction form
    13,057.65/18,019.50 = 7,089.27/x
  3. Step 3: Cross multiply
    13,057.65x = 18,019.50 × 7,089.27
  4. Step 4: Simplify right side
    13,057.65x = 127,745,100.77
  5. Step 5: Solve for x
    x = 127,745,100.77/13,057.65
  6. Step 6: Final answer
    x = 9,783.16

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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.