Home / 11,174.55-15,420.85-6,138.90

Finding the Fourth Proportional to 11,174.55, 15,420.85 and 6,138.90

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Solution

The fourth proportional to 11,174.55, 15,420.85 and 6,138.90 is: 8,471.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,174.55 : 15,420.85 = 6,138.90 : x
  2. Step 2: Convert to fraction form
    11,174.55/15,420.85 = 6,138.90/x
  3. Step 3: Cross multiply
    11,174.55x = 15,420.85 × 6,138.90
  4. Step 4: Simplify right side
    11,174.55x = 94,667,056.07
  5. Step 5: Solve for x
    x = 94,667,056.07/11,174.55
  6. Step 6: Final answer
    x = 8,471.67

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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.