Home / 13,191.75-18,201.71-8,088.36

Finding the Fourth Proportional to 13,191.75, 18,201.71 and 8,088.36

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Solution

The fourth proportional to 13,191.75, 18,201.71 and 8,088.36 is: 11,160.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.75 : 18,201.71 = 8,088.36 : x
  2. Step 2: Convert to fraction form
    13,191.75/18,201.71 = 8,088.36/x
  3. Step 3: Cross multiply
    13,191.75x = 18,201.71 × 8,088.36
  4. Step 4: Simplify right side
    13,191.75x = 147,221,942.65
  5. Step 5: Solve for x
    x = 147,221,942.65/13,191.75
  6. Step 6: Final answer
    x = 11,160.15

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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.