Home / 12,762.72-19,136.88-3,995.28

Finding the Fourth Proportional to 12,762.72, 19,136.88 and 3,995.28

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Solution

The fourth proportional to 12,762.72, 19,136.88 and 3,995.28 is: 5,990.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,762.72 : 19,136.88 = 3,995.28 : x
  2. Step 2: Convert to fraction form
    12,762.72/19,136.88 = 3,995.28/x
  3. Step 3: Cross multiply
    12,762.72x = 19,136.88 × 3,995.28
  4. Step 4: Simplify right side
    12,762.72x = 76,457,193.93
  5. Step 5: Solve for x
    x = 76,457,193.93/12,762.72
  6. Step 6: Final answer
    x = 5,990.67

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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.