Home / 19,163.08-28,744.62-5,311.72

Finding the Fourth Proportional to 19,163.08, 28,744.62 and 5,311.72

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Solution

The fourth proportional to 19,163.08, 28,744.62 and 5,311.72 is: 7,967.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,163.08 : 28,744.62 = 5,311.72 : x
  2. Step 2: Convert to fraction form
    19,163.08/28,744.62 = 5,311.72/x
  3. Step 3: Cross multiply
    19,163.08x = 28,744.62 × 5,311.72
  4. Step 4: Simplify right side
    19,163.08x = 152,683,372.95
  5. Step 5: Solve for x
    x = 152,683,372.95/19,163.08
  6. Step 6: Final answer
    x = 7,967.58

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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.