Home / 12,991.06-17,933.66-7,612.75

Finding the Fourth Proportional to 12,991.06, 17,933.66 and 7,612.75

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Solution

The fourth proportional to 12,991.06, 17,933.66 and 7,612.75 is: 10,509.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991.06 : 17,933.66 = 7,612.75 : x
  2. Step 2: Convert to fraction form
    12,991.06/17,933.66 = 7,612.75/x
  3. Step 3: Cross multiply
    12,991.06x = 17,933.66 × 7,612.75
  4. Step 4: Simplify right side
    12,991.06x = 136,524,470.17
  5. Step 5: Solve for x
    x = 136,524,470.17/12,991.06
  6. Step 6: Final answer
    x = 10,509.11

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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.