Home / 12,979.88-17,912.24-7,011.54

Finding the Fourth Proportional to 12,979.88, 17,912.24 and 7,011.54

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Solution

The fourth proportional to 12,979.88, 17,912.24 and 7,011.54 is: 9,675.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.88 : 17,912.24 = 7,011.54 : x
  2. Step 2: Convert to fraction form
    12,979.88/17,912.24 = 7,011.54/x
  3. Step 3: Cross multiply
    12,979.88x = 17,912.24 × 7,011.54
  4. Step 4: Simplify right side
    12,979.88x = 125,592,352.19
  5. Step 5: Solve for x
    x = 125,592,352.19/12,979.88
  6. Step 6: Final answer
    x = 9,675.93

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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.