Home / 18,378.51-27,571.82-5,231.00

Finding the Fourth Proportional to 18,378.51, 27,571.82 and 5,231.00

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Solution

The fourth proportional to 18,378.51, 27,571.82 and 5,231.00 is: 7,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.51 : 27,571.82 = 5,231.00 : x
  2. Step 2: Convert to fraction form
    18,378.51/27,571.82 = 5,231.00/x
  3. Step 3: Cross multiply
    18,378.51x = 27,571.82 × 5,231.00
  4. Step 4: Simplify right side
    18,378.51x = 144,228,026.41
  5. Step 5: Solve for x
    x = 144,228,026.41/18,378.51
  6. Step 6: Final answer
    x = 7,847.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.