Home / 13,610.70-18,782.67-8,578.17

Finding the Fourth Proportional to 13,610.70, 18,782.67 and 8,578.17

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Solution

The fourth proportional to 13,610.70, 18,782.67 and 8,578.17 is: 11,837.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.70 : 18,782.67 = 8,578.17 : x
  2. Step 2: Convert to fraction form
    13,610.70/18,782.67 = 8,578.17/x
  3. Step 3: Cross multiply
    13,610.70x = 18,782.67 × 8,578.17
  4. Step 4: Simplify right side
    13,610.70x = 161,120,842.40
  5. Step 5: Solve for x
    x = 161,120,842.40/13,610.70
  6. Step 6: Final answer
    x = 11,837.81

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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.