Home / 13,838.30-19,101.78-8,173.07

Finding the Fourth Proportional to 13,838.30, 19,101.78 and 8,173.07

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Solution

The fourth proportional to 13,838.30, 19,101.78 and 8,173.07 is: 11,281.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,838.30 : 19,101.78 = 8,173.07 : x
  2. Step 2: Convert to fraction form
    13,838.30/19,101.78 = 8,173.07/x
  3. Step 3: Cross multiply
    13,838.30x = 19,101.78 × 8,173.07
  4. Step 4: Simplify right side
    13,838.30x = 156,120,185.06
  5. Step 5: Solve for x
    x = 156,120,185.06/13,838.30
  6. Step 6: Final answer
    x = 11,281.75

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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.