Home / 13,749.12-18,972.62-8,084.06

Finding the Fourth Proportional to 13,749.12, 18,972.62 and 8,084.06

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Solution

The fourth proportional to 13,749.12, 18,972.62 and 8,084.06 is: 11,155.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.12 : 18,972.62 = 8,084.06 : x
  2. Step 2: Convert to fraction form
    13,749.12/18,972.62 = 8,084.06/x
  3. Step 3: Cross multiply
    13,749.12x = 18,972.62 × 8,084.06
  4. Step 4: Simplify right side
    13,749.12x = 153,375,798.44
  5. Step 5: Solve for x
    x = 153,375,798.44/13,749.12
  6. Step 6: Final answer
    x = 11,155.32

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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.