Home / 12,955.11-17,880.99-9,174.30

Finding the Fourth Proportional to 12,955.11, 17,880.99 and 9,174.30

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Solution

The fourth proportional to 12,955.11, 17,880.99 and 9,174.30 is: 12,662.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.11 : 17,880.99 = 9,174.30 : x
  2. Step 2: Convert to fraction form
    12,955.11/17,880.99 = 9,174.30/x
  3. Step 3: Cross multiply
    12,955.11x = 17,880.99 × 9,174.30
  4. Step 4: Simplify right side
    12,955.11x = 164,045,566.56
  5. Step 5: Solve for x
    x = 164,045,566.56/12,955.11
  6. Step 6: Final answer
    x = 12,662.61

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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.