Home / 13,320.75-19,985.04-3,960.84

Finding the Fourth Proportional to 13,320.75, 19,985.04 and 3,960.84

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Solution

The fourth proportional to 13,320.75, 19,985.04 and 3,960.84 is: 5,942.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.75 : 19,985.04 = 3,960.84 : x
  2. Step 2: Convert to fraction form
    13,320.75/19,985.04 = 3,960.84/x
  3. Step 3: Cross multiply
    13,320.75x = 19,985.04 × 3,960.84
  4. Step 4: Simplify right side
    13,320.75x = 79,157,545.83
  5. Step 5: Solve for x
    x = 79,157,545.83/13,320.75
  6. Step 6: Final answer
    x = 5,942.42

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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.