Home / 13,786.68-19,025.82-8,478.36

Finding the Fourth Proportional to 13,786.68, 19,025.82 and 8,478.36

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Solution

The fourth proportional to 13,786.68, 19,025.82 and 8,478.36 is: 11,700.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786.68 : 19,025.82 = 8,478.36 : x
  2. Step 2: Convert to fraction form
    13,786.68/19,025.82 = 8,478.36/x
  3. Step 3: Cross multiply
    13,786.68x = 19,025.82 × 8,478.36
  4. Step 4: Simplify right side
    13,786.68x = 161,307,751.26
  5. Step 5: Solve for x
    x = 161,307,751.26/13,786.68
  6. Step 6: Final answer
    x = 11,700.26

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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.