Home / 13,164.99-18,162.54-8,120.45

Finding the Fourth Proportional to 13,164.99, 18,162.54 and 8,120.45

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Solution

The fourth proportional to 13,164.99, 18,162.54 and 8,120.45 is: 11,203.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.99 : 18,162.54 = 8,120.45 : x
  2. Step 2: Convert to fraction form
    13,164.99/18,162.54 = 8,120.45/x
  3. Step 3: Cross multiply
    13,164.99x = 18,162.54 × 8,120.45
  4. Step 4: Simplify right side
    13,164.99x = 147,487,907.13
  5. Step 5: Solve for x
    x = 147,487,907.13/13,164.99
  6. Step 6: Final answer
    x = 11,203.04

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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.