Home / 13,938.17-19,238.36-8,629.97

Finding the Fourth Proportional to 13,938.17, 19,238.36 and 8,629.97

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Solution

The fourth proportional to 13,938.17, 19,238.36 and 8,629.97 is: 11,911.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.17 : 19,238.36 = 8,629.97 : x
  2. Step 2: Convert to fraction form
    13,938.17/19,238.36 = 8,629.97/x
  3. Step 3: Cross multiply
    13,938.17x = 19,238.36 × 8,629.97
  4. Step 4: Simplify right side
    13,938.17x = 166,026,330.31
  5. Step 5: Solve for x
    x = 166,026,330.31/13,938.17
  6. Step 6: Final answer
    x = 11,911.63

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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.