Home / 13,687.85-20,530.01-4,328.82

Finding the Fourth Proportional to 13,687.85, 20,530.01 and 4,328.82

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Solution

The fourth proportional to 13,687.85, 20,530.01 and 4,328.82 is: 6,492.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.85 : 20,530.01 = 4,328.82 : x
  2. Step 2: Convert to fraction form
    13,687.85/20,530.01 = 4,328.82/x
  3. Step 3: Cross multiply
    13,687.85x = 20,530.01 × 4,328.82
  4. Step 4: Simplify right side
    13,687.85x = 88,870,717.89
  5. Step 5: Solve for x
    x = 88,870,717.89/13,687.85
  6. Step 6: Final answer
    x = 6,492.67

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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.