Home / 13,761.04-18,995.08-8,172

Finding the Fourth Proportional to 13,761.04, 18,995.08 and 8,172

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Solution

The fourth proportional to 13,761.04, 18,995.08 and 8,172 is: 11,280.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.04 : 18,995.08 = 8,172 : x
  2. Step 2: Convert to fraction form
    13,761.04/18,995.08 = 8,172/x
  3. Step 3: Cross multiply
    13,761.04x = 18,995.08 × 8,172
  4. Step 4: Simplify right side
    13,761.04x = 155,227,793.76
  5. Step 5: Solve for x
    x = 155,227,793.76/13,761.04
  6. Step 6: Final answer
    x = 11,280.24

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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.