Home / 13,905.66-19,186.82-8,242.18

Finding the Fourth Proportional to 13,905.66, 19,186.82 and 8,242.18

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Solution

The fourth proportional to 13,905.66, 19,186.82 and 8,242.18 is: 11,372.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.66 : 19,186.82 = 8,242.18 : x
  2. Step 2: Convert to fraction form
    13,905.66/19,186.82 = 8,242.18/x
  3. Step 3: Cross multiply
    13,905.66x = 19,186.82 × 8,242.18
  4. Step 4: Simplify right side
    13,905.66x = 158,141,224.07
  5. Step 5: Solve for x
    x = 158,141,224.07/13,905.66
  6. Step 6: Final answer
    x = 11,372.44

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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.