Home / 13,174.04-18,179.55-7,205.78

Finding the Fourth Proportional to 13,174.04, 18,179.55 and 7,205.78

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Solution

The fourth proportional to 13,174.04, 18,179.55 and 7,205.78 is: 9,943.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,174.04 : 18,179.55 = 7,205.78 : x
  2. Step 2: Convert to fraction form
    13,174.04/18,179.55 = 7,205.78/x
  3. Step 3: Cross multiply
    13,174.04x = 18,179.55 × 7,205.78
  4. Step 4: Simplify right side
    13,174.04x = 130,997,746.90
  5. Step 5: Solve for x
    x = 130,997,746.90/13,174.04
  6. Step 6: Final answer
    x = 9,943.63

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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.