Home / 18,578.77-27,875.31-11,188.33

Finding the Fourth Proportional to 18,578.77, 27,875.31 and 11,188.33

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Solution

The fourth proportional to 18,578.77, 27,875.31 and 11,188.33 is: 16,786.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578.77 : 27,875.31 = 11,188.33 : x
  2. Step 2: Convert to fraction form
    18,578.77/27,875.31 = 11,188.33/x
  3. Step 3: Cross multiply
    18,578.77x = 27,875.31 × 11,188.33
  4. Step 4: Simplify right side
    18,578.77x = 311,878,167.13
  5. Step 5: Solve for x
    x = 311,878,167.13/18,578.77
  6. Step 6: Final answer
    x = 16,786.80

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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.