Home / 13,760.08-18,989.10-7,791.62

Finding the Fourth Proportional to 13,760.08, 18,989.10 and 7,791.62

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Solution

The fourth proportional to 13,760.08, 18,989.10 and 7,791.62 is: 10,752.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.08 : 18,989.10 = 7,791.62 : x
  2. Step 2: Convert to fraction form
    13,760.08/18,989.10 = 7,791.62/x
  3. Step 3: Cross multiply
    13,760.08x = 18,989.10 × 7,791.62
  4. Step 4: Simplify right side
    13,760.08x = 147,955,851.34
  5. Step 5: Solve for x
    x = 147,955,851.34/13,760.08
  6. Step 6: Final answer
    x = 10,752.54

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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.