Home / 14,679.90-20,234.67-11,487.78

Finding the Fourth Proportional to 14,679.90, 20,234.67 and 11,487.78

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Solution

The fourth proportional to 14,679.90, 20,234.67 and 11,487.78 is: 15,834.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679.90 : 20,234.67 = 11,487.78 : x
  2. Step 2: Convert to fraction form
    14,679.90/20,234.67 = 11,487.78/x
  3. Step 3: Cross multiply
    14,679.90x = 20,234.67 × 11,487.78
  4. Step 4: Simplify right side
    14,679.90x = 232,451,437.33
  5. Step 5: Solve for x
    x = 232,451,437.33/14,679.90
  6. Step 6: Final answer
    x = 15,834.67

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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.