Home / 13,759.08-18,988.20-7,791

Finding the Fourth Proportional to 13,759.08, 18,988.20 and 7,791

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Solution

The fourth proportional to 13,759.08, 18,988.20 and 7,791 is: 10,751.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.08 : 18,988.20 = 7,791 : x
  2. Step 2: Convert to fraction form
    13,759.08/18,988.20 = 7,791/x
  3. Step 3: Cross multiply
    13,759.08x = 18,988.20 × 7,791
  4. Step 4: Simplify right side
    13,759.08x = 147,937,066.20
  5. Step 5: Solve for x
    x = 147,937,066.20/13,759.08
  6. Step 6: Final answer
    x = 10,751.96

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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.