Home / 18,665.40-25,757.28-11,591.67

Finding the Fourth Proportional to 18,665.40, 25,757.28 and 11,591.67

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Solution

The fourth proportional to 18,665.40, 25,757.28 and 11,591.67 is: 15,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.40 : 25,757.28 = 11,591.67 : x
  2. Step 2: Convert to fraction form
    18,665.40/25,757.28 = 11,591.67/x
  3. Step 3: Cross multiply
    18,665.40x = 25,757.28 × 11,591.67
  4. Step 4: Simplify right side
    18,665.40x = 298,569,889.86
  5. Step 5: Solve for x
    x = 298,569,889.86/18,665.40
  6. Step 6: Final answer
    x = 15,995.90

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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.