Home / 12,847.55-17,730.04-7,105.09

Finding the Fourth Proportional to 12,847.55, 17,730.04 and 7,105.09

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Solution

The fourth proportional to 12,847.55, 17,730.04 and 7,105.09 is: 9,805.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,847.55 : 17,730.04 = 7,105.09 : x
  2. Step 2: Convert to fraction form
    12,847.55/17,730.04 = 7,105.09/x
  3. Step 3: Cross multiply
    12,847.55x = 17,730.04 × 7,105.09
  4. Step 4: Simplify right side
    12,847.55x = 125,973,529.90
  5. Step 5: Solve for x
    x = 125,973,529.90/12,847.55
  6. Step 6: Final answer
    x = 9,805.26

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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.