Home / 13,723.51-18,936.40-7,755.13

Finding the Fourth Proportional to 13,723.51, 18,936.40 and 7,755.13

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Solution

The fourth proportional to 13,723.51, 18,936.40 and 7,755.13 is: 10,700.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.51 : 18,936.40 = 7,755.13 : x
  2. Step 2: Convert to fraction form
    13,723.51/18,936.40 = 7,755.13/x
  3. Step 3: Cross multiply
    13,723.51x = 18,936.40 × 7,755.13
  4. Step 4: Simplify right side
    13,723.51x = 146,854,243.73
  5. Step 5: Solve for x
    x = 146,854,243.73/13,723.51
  6. Step 6: Final answer
    x = 10,700.92

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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.