Home / 12,918.28-17,826.84-7,252.90

Finding the Fourth Proportional to 12,918.28, 17,826.84 and 7,252.90

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Solution

The fourth proportional to 12,918.28, 17,826.84 and 7,252.90 is: 10,008.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.28 : 17,826.84 = 7,252.90 : x
  2. Step 2: Convert to fraction form
    12,918.28/17,826.84 = 7,252.90/x
  3. Step 3: Cross multiply
    12,918.28x = 17,826.84 × 7,252.90
  4. Step 4: Simplify right side
    12,918.28x = 129,296,287.84
  5. Step 5: Solve for x
    x = 129,296,287.84/12,918.28
  6. Step 6: Final answer
    x = 10,008.79

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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.