Home / 13,817.20-19,070.04-8,231.28

Finding the Fourth Proportional to 13,817.20, 19,070.04 and 8,231.28

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Solution

The fourth proportional to 13,817.20, 19,070.04 and 8,231.28 is: 11,360.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.20 : 19,070.04 = 8,231.28 : x
  2. Step 2: Convert to fraction form
    13,817.20/19,070.04 = 8,231.28/x
  3. Step 3: Cross multiply
    13,817.20x = 19,070.04 × 8,231.28
  4. Step 4: Simplify right side
    13,817.20x = 156,970,838.85
  5. Step 5: Solve for x
    x = 156,970,838.85/13,817.20
  6. Step 6: Final answer
    x = 11,360.54

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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.