Home / 13,428.11-18,529.37-7,761.96

Finding the Fourth Proportional to 13,428.11, 18,529.37 and 7,761.96

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Solution

The fourth proportional to 13,428.11, 18,529.37 and 7,761.96 is: 10,710.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.11 : 18,529.37 = 7,761.96 : x
  2. Step 2: Convert to fraction form
    13,428.11/18,529.37 = 7,761.96/x
  3. Step 3: Cross multiply
    13,428.11x = 18,529.37 × 7,761.96
  4. Step 4: Simplify right side
    13,428.11x = 143,824,189.96
  5. Step 5: Solve for x
    x = 143,824,189.96/13,428.11
  6. Step 6: Final answer
    x = 10,710.68

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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.