Home / 13,455.30-20,185.65-4,095.90

Finding the Fourth Proportional to 13,455.30, 20,185.65 and 4,095.90

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Solution

The fourth proportional to 13,455.30, 20,185.65 and 4,095.90 is: 6,144.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.30 : 20,185.65 = 4,095.90 : x
  2. Step 2: Convert to fraction form
    13,455.30/20,185.65 = 4,095.90/x
  3. Step 3: Cross multiply
    13,455.30x = 20,185.65 × 4,095.90
  4. Step 4: Simplify right side
    13,455.30x = 82,678,403.84
  5. Step 5: Solve for x
    x = 82,678,403.84/13,455.30
  6. Step 6: Final answer
    x = 6,144.67

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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.