Home / 13,883.38-19,142.30-9,638.06

Finding the Fourth Proportional to 13,883.38, 19,142.30 and 9,638.06

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Solution

The fourth proportional to 13,883.38, 19,142.30 and 9,638.06 is: 13,288.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,883.38 : 19,142.30 = 9,638.06 : x
  2. Step 2: Convert to fraction form
    13,883.38/19,142.30 = 9,638.06/x
  3. Step 3: Cross multiply
    13,883.38x = 19,142.30 × 9,638.06
  4. Step 4: Simplify right side
    13,883.38x = 184,494,635.94
  5. Step 5: Solve for x
    x = 184,494,635.94/13,883.38
  6. Step 6: Final answer
    x = 13,288.88

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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.