Home / 18,513.31-27,735.09-9,142.36

Finding the Fourth Proportional to 18,513.31, 27,735.09 and 9,142.36

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Solution

The fourth proportional to 18,513.31, 27,735.09 and 9,142.36 is: 13,696.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,513.31 : 27,735.09 = 9,142.36 : x
  2. Step 2: Convert to fraction form
    18,513.31/27,735.09 = 9,142.36/x
  3. Step 3: Cross multiply
    18,513.31x = 27,735.09 × 9,142.36
  4. Step 4: Simplify right side
    18,513.31x = 253,564,177.41
  5. Step 5: Solve for x
    x = 253,564,177.41/18,513.31
  6. Step 6: Final answer
    x = 13,696.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.