Home / 19,188.85-28,780.91-5,149.98

Finding the Fourth Proportional to 19,188.85, 28,780.91 and 5,149.98

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Solution

The fourth proportional to 19,188.85, 28,780.91 and 5,149.98 is: 7,724.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,188.85 : 28,780.91 = 5,149.98 : x
  2. Step 2: Convert to fraction form
    19,188.85/28,780.91 = 5,149.98/x
  3. Step 3: Cross multiply
    19,188.85x = 28,780.91 × 5,149.98
  4. Step 4: Simplify right side
    19,188.85x = 148,220,966.98
  5. Step 5: Solve for x
    x = 148,220,966.98/19,188.85
  6. Step 6: Final answer
    x = 7,724.33

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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.