Home / 13,665.29-18,857.03-7,999.22

Finding the Fourth Proportional to 13,665.29, 18,857.03 and 7,999.22

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Solution

The fourth proportional to 13,665.29, 18,857.03 and 7,999.22 is: 11,038.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.29 : 18,857.03 = 7,999.22 : x
  2. Step 2: Convert to fraction form
    13,665.29/18,857.03 = 7,999.22/x
  3. Step 3: Cross multiply
    13,665.29x = 18,857.03 × 7,999.22
  4. Step 4: Simplify right side
    13,665.29x = 150,841,538.66
  5. Step 5: Solve for x
    x = 150,841,538.66/13,665.29
  6. Step 6: Final answer
    x = 11,038.30

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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.