Home / 13,027.36-17,979.48-7,990.56

Finding the Fourth Proportional to 13,027.36, 17,979.48 and 7,990.56

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Solution

The fourth proportional to 13,027.36, 17,979.48 and 7,990.56 is: 11,028.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,027.36 : 17,979.48 = 7,990.56 : x
  2. Step 2: Convert to fraction form
    13,027.36/17,979.48 = 7,990.56/x
  3. Step 3: Cross multiply
    13,027.36x = 17,979.48 × 7,990.56
  4. Step 4: Simplify right side
    13,027.36x = 143,666,113.71
  5. Step 5: Solve for x
    x = 143,666,113.71/13,027.36
  6. Step 6: Final answer
    x = 11,028.03

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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.