Home / 19,271.80-28,911.93-12,226.96

Finding the Fourth Proportional to 19,271.80, 28,911.93 and 12,226.96

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Solution

The fourth proportional to 19,271.80, 28,911.93 and 12,226.96 is: 18,343.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.80 : 28,911.93 = 12,226.96 : x
  2. Step 2: Convert to fraction form
    19,271.80/28,911.93 = 12,226.96/x
  3. Step 3: Cross multiply
    19,271.80x = 28,911.93 × 12,226.96
  4. Step 4: Simplify right side
    19,271.80x = 353,505,011.63
  5. Step 5: Solve for x
    x = 353,505,011.63/19,271.80
  6. Step 6: Final answer
    x = 18,343.12

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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.