Home / 28,011.72-41,989.10-11,156.67

Finding the Fourth Proportional to 28,011.72, 41,989.10 and 11,156.67

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Solution

The fourth proportional to 28,011.72, 41,989.10 and 11,156.67 is: 16,723.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.72 : 41,989.10 = 11,156.67 : x
  2. Step 2: Convert to fraction form
    28,011.72/41,989.10 = 11,156.67/x
  3. Step 3: Cross multiply
    28,011.72x = 41,989.10 × 11,156.67
  4. Step 4: Simplify right side
    28,011.72x = 468,458,609.38
  5. Step 5: Solve for x
    x = 468,458,609.38/28,011.72
  6. Step 6: Final answer
    x = 16,723.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.