Home / 13,761.06-18,990.30-7,473.48

Finding the Fourth Proportional to 13,761.06, 18,990.30 and 7,473.48

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Solution

The fourth proportional to 13,761.06, 18,990.30 and 7,473.48 is: 10,313.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.06 : 18,990.30 = 7,473.48 : x
  2. Step 2: Convert to fraction form
    13,761.06/18,990.30 = 7,473.48/x
  3. Step 3: Cross multiply
    13,761.06x = 18,990.30 × 7,473.48
  4. Step 4: Simplify right side
    13,761.06x = 141,923,627.24
  5. Step 5: Solve for x
    x = 141,923,627.24/13,761.06
  6. Step 6: Final answer
    x = 10,313.42

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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.