Home / 13,540.05-18,682.85-7,571.76

Finding the Fourth Proportional to 13,540.05, 18,682.85 and 7,571.76

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Solution

The fourth proportional to 13,540.05, 18,682.85 and 7,571.76 is: 10,447.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.05 : 18,682.85 = 7,571.76 : x
  2. Step 2: Convert to fraction form
    13,540.05/18,682.85 = 7,571.76/x
  3. Step 3: Cross multiply
    13,540.05x = 18,682.85 × 7,571.76
  4. Step 4: Simplify right side
    13,540.05x = 141,462,018.46
  5. Step 5: Solve for x
    x = 141,462,018.46/13,540.05
  6. Step 6: Final answer
    x = 10,447.67

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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.