Home / 13,583.19-18,744.85-7,921.85

Finding the Fourth Proportional to 13,583.19, 18,744.85 and 7,921.85

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Solution

The fourth proportional to 13,583.19, 18,744.85 and 7,921.85 is: 10,932.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.19 : 18,744.85 = 7,921.85 : x
  2. Step 2: Convert to fraction form
    13,583.19/18,744.85 = 7,921.85/x
  3. Step 3: Cross multiply
    13,583.19x = 18,744.85 × 7,921.85
  4. Step 4: Simplify right side
    13,583.19x = 148,493,796.25
  5. Step 5: Solve for x
    x = 148,493,796.25/13,583.19
  6. Step 6: Final answer
    x = 10,932.17

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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.